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 A268837 #6 Feb 17 2016 17:25:48 %S A268837 0,2,7,18,17,48,56,80,67,122,136,194,204,268,281,328,291,378,396,498, %T A268837 510,640,675,792,790,886,965,1098,1093,1208,1248,1344,1227,1378,1356, %U A268837 1530,1538,1792,1815,2016,2008,2218,2339,2602,2619,2892,2970,3208,3150,3294,3385,3586,3691,4012,4174,4440,4367,4554,4644 %N A268837 Antidiagonal sums of array A268715: a(n) = Sum_{k=0..n} A003188(A006068(n)+A006068(n-k)). %H A268837 Antti Karttunen, <a href="/A268837/b268837.txt">Table of n, a(n) for n = 0..4096</a> %F A268837 a(n) = Sum_{k=0..n} A003188(A006068(n)+A006068(n-k)). %o A268837 (Scheme) %o A268837 (define (A268837 n) (add (lambda (k) (A003188 (+ (A006068 k) (A006068 (- n k))))) 0 n)) %o A268837 (define (add intfun lowlim uplim) (let sumloop ((i lowlim) (res 0)) (cond ((> i uplim) res) (else (sumloop (1+ i) (+ res (intfun i))))))) %Y A268837 Cf. A003188, A006068. %Y A268837 Cf. also A268720, A268836. %K A268837 nonn %O A268837 0,2 %A A268837 _Antti Karttunen_, Feb 15 2016