30 (number) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "30 (number)" in English language version.

refsWebsite

Global rank English rank

742^nd place

538^th place

8^th place

10^th place

bbc.co.uk

Barnes, Richard (June 2006). "Report of the 7 July Review Committee" (PDF). BBC News. Retrieved 18 December 2011.

"Sloane's A005835 : Pseudoperfect (or semiperfect) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 31 May 2016.
"Sloane's A002110 : Primorial numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 31 May 2016.
"Sloane's A005349 : Niven (or Harshad) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 31 May 2016.
"Sloane's A000330 : Square pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 31 May 2016.