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 A283474 #6 Mar 23 2017 20:32:05 %S A283474 0,1,2,3,6,8,14,20,40,48,68,82,150,190,272,354,708,858,1130,1280,2138, %T A283474 2328,3186,3894,7080,8210,10538,11818,20028,23214,33752,44290,88580, %U A283474 100398,123612,134150,222730,233268,277558,300772,534040,567792,691404,725156,1025928,1126326,1427098,1704656,3131754,3665794 %N A283474 a(0) = 0, a(1) = 1, for n > 1, a(n) = a(n-1) + a(n-A002487(n)). %H A283474 Antti Karttunen, <a href="/A283474/b283474.txt">Table of n, a(n) for n = 0..1024</a> %F A283474 a(0) = 0, a(1) = 1, for n > 1, a(n) = a(n-1) + a(A284013(n)). %o A283474 (Scheme, with memoization-macro definec) %o A283474 (definec (A283474 n) (if (<= n 1) n (+ (A283474 (- n 1)) (A283474 (- n (A002487 n)))))) %Y A283474 Cf. A000045, A002487, A078510, A284007, A284013. %Y A283474 Cf. A283479 (first differences). %K A283474 nonn %O A283474 0,3 %A A283474 _Antti Karttunen_, Mar 23 2017