This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A075526 #24 Dec 12 2021 16:06:43 %S A075526 1,1,2,2,4,2,4,2,4,6,2,6,4,2,4,6,6,2,6,4,2,6,4,6,8,4,2,4,2,4,14,4,6,2, %T A075526 10,2,6,6,4,6,6,2,10,2,4,2,12,12,4,2,4,6,2,10,6,6,6,2,6,4,2,10,14,4,2, %U A075526 4,14,6,10,2,4,6,8,6,6,4,6,8,4,8,10,2,10,2,6,4,6,8,4,2,4,12,8,4,8,4,6 %N A075526 a(n) = A008578(n+2) - A008578(n+1). %C A075526 n appears this number of times in A000720. - _Lekraj Beedassy_, Jun 19 2006 %C A075526 a(0) = 1, for n >= 1: a(n) = differences between consecutive primes (A001223(n)) = A158611(n+2) - A158611(n+1). Partial sums give A006093 (shifted). - _Jaroslav Krizek_, Aug 04 2009 %C A075526 First differences of noncomposite numbers. - _Juri-Stepan Gerasimov_, Feb 17 2010 %C A075526 This is 1 together with A001223. A054541 is 2 together with A001223. A125266 is 3 together with A001223. - _Omar E. Pol_, Nov 01 2013 %F A075526 a(n) = A001223(n) for n>0. %t A075526 Prime[Range[100]] // Differences // Prepend[#, 1]& (* _Jean-François Alcover_, Dec 11 2021 *) %Y A075526 Cf. A000040, A001223, A075527, A158611. %K A075526 nonn %O A075526 0,3 %A A075526 _Reinhard Zumkeller_, Sep 22 2002 %E A075526 Correction for change of offset in A158611 and A008578 in Aug 2009 _Jaroslav Krizek_, Jan 27 2010