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 A234666 #14 Jan 13 2014 11:24:33 %S A234666 1,1,2,3,5,7,11,14,20,26,35,44,58,71,90,110,136,163,199,235,282,331, %T A234666 391,454,532,612,709,811,931,1057,1206,1360,1540,1729,1945,2172,2432, %U A234666 2702,3009,3331,3692,4070,4494,4935,5426,5940,6506,7097,7748,8423 %N A234666 Number of combinations for the sum of 6 different numbers from 1 to 49. %H A234666 Jacques ALARDET, <a href="/A234666/b234666.txt">Table of n, a(n) for n = 21..279</a> %e A234666 a(21)=1 because the only way to sum to 21 is 1+2+3+4+5+6=21; a(279)=1 because 279 occurs only as 49+48+47+46+45+44. %Y A234666 A026812 contains the same values until A026812(49)=4935. %K A234666 nonn,fini,full %O A234666 21,3 %A A234666 _Jacques ALARDET_, Dec 29 2013