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 A079463 #13 Jun 04 2021 03:15:07 %S A079463 0,1,3,4,5,7,13,16,19,21,22,34,40,49,51,53,67,77,83,85,97,103,115,121, %T A079463 148,196,202,205,211,213,292,307,309,310,333,339,340,341,346,358,364, %U A079463 439,445,583,589,601,607,819,821,845,851,853,877,925,931,1021,1039,1069 %N A079463 Numbers k such that C(6*k,n)/(5*k+1) (A002295) is not divisible by 6. %C A079463 Is a(n)/n^2 bounded? It seems that 0.2 < a(n)/n^2 <= 1. %H A079463 Amiram Eldar, <a href="/A079463/b079463.txt">Table of n, a(n) for n = 1..1000</a> %t A079463 Select[Range[0,1000], !Divisible[Binomial[6*#,#]/(5*# + 1),6] &] (* _Amiram Eldar_, Jun 04 2021 *) %Y A079463 Cf. A000225 (C(2*k, k)/(k+1) is not divisible by 2), A003462 (C(3*k, k)/(2*k+1) is not divisible by 3), A003463 (C(5*k, k)/(4*k+1) is not divisible by 5). %K A079463 nonn %O A079463 1,3 %A A079463 _Benoit Cloitre_, Jan 14 2003