Happy number (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Happy number" in English language version.

refsWebsite

Global rank English rank

742^nd place

538^th place

69^th place

59^th place

1,379^th place

1,175^th place

513^th place

537^th place

18^th place

17^th place

3,153^rd place

2,332^nd place

arxiv.org

Gilmer, Justin (2013). "On the Density of Happy Numbers". Integers. 13 (2): 2. arXiv:1110.3836. Bibcode:2011arXiv1110.3836G.
Pan, Hao (2006). "Consecutive Happy Numbers". arXiv:math/0607213.

harvard.edu

ui.adsabs.harvard.edu

Gilmer, Justin (2013). "On the Density of Happy Numbers". Integers. 13 (2): 2. arXiv:1110.3836. Bibcode:2011arXiv1110.3836G.

oeis.org

Sloane, N. J. A. (ed.). "Sequence A161872 (Smallest unhappy number in base n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
Sloane, N. J. A. (ed.). "Sequence A035502 (Lower of pair of consecutive happy numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 8 April 2011.
Sloane, N. J. A. (ed.). "Sequence A072494 (First of triples of consecutive happy numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 8 April 2011.
Sloane, N. J. A. (ed.). "Sequence A055629 (Beginning of first run of at least n consecutive happy numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
Sloane, N. J. A. (ed.). "Sequence A068571 (Number of happy numbers <= 10^n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.

utm.edu

primes.utm.edu

Chris K. Caldwell. "The Prime Database: 10¹⁵⁰⁰⁰⁶ + 7426247 · 10⁷⁵⁰⁰⁰ + 1". utm.edu.
Chris K. Caldwell. "The Prime Database: 2^42643801 − 1". utm.edu.

uwaterloo.ca

cs.uwaterloo.ca

Styer, Robert (2010). "Smallest Examples of Strings of Consecutive Happy Numbers". Journal of Integer Sequences. 13: 5. 10.6.3 – via University of Waterloo. Cited in Sloane "A055629".

wolfram.com

mathworld.wolfram.com

"Sad Number". Wolfram Research, Inc. Retrieved 16 September 2009.