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 A194947 #11 Jun 02 2025 04:15:11 %S A194947 1,2,0,0,2,2,0,0,2,2,2,2,2,0,2,0,2,0,0,0,0,0,0,2,8,8,0,2,2,2,2,4,2,2, %T A194947 0,0,2,2,2,2,2,4,6,0,4,2,4,2,2,2,4,4,0,2,2,4,0,4,0,6,6,2,2,2,0,2,2,6, %U A194947 2,0,0,0,0,2,0,2,0,4,2,2,2,2,0,0,0,2 %N A194947 Absolute values of differences of A036274. %e A194947 a(1) = abs(A036274(1) - A036274(2)); a(2) = abs(A036274(2) - A036274(3)) ... %Y A194947 Cf. A036274, A036273, A036272, A036263, A001223. These sequences are (absolute, except for A036263) n-th differences of primes (n=5,4,3,2,1). %K A194947 nonn %O A194947 1,2 %A A194947 _Umut Uludag_, Jan 02 2013