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 A073076 #22 May 27 2019 22:33:14 %S A073076 97,136,178,192,199,292,313,332,448,467,472,478,487,535,542,577,604, %T A073076 617,697,773,790,797,852,885,940,962,967,997,1017,1045,1096,1127,1147, %U A073076 1165,1182,1202,1237,1291,1292,1319,1332,1339,1345,1354,1368,1397,1414 %N A073076 Numbers k such that 2*k+1 divides C(2*k,k). %C A073076 Integers k such that A056617(k) = 1. - _Michel Marcus_, May 27 2019 %C A073076 Numbers n such that A005408(n) divides A000984(n). - _Felix Fröhlich_, May 27 2019 %H A073076 Michael De Vlieger, <a href="/A073076/b073076.txt">Table of n, a(n) for n = 1..10000</a> %t A073076 Select[Range@ 1500, Mod[Binomial[2 #, #], 2 # + 1] == 0 &] (* _Michael De Vlieger_, May 27 2019 *) %o A073076 (PARI) isok(n) = ! (binomial(2*n, n) % (2*n+1)); \\ _Michel Marcus_, Nov 28 2013 %Y A073076 Cf. A000984, A005408, A056616, A056617, A080394. %K A073076 easy,nonn %O A073076 1,1 %A A073076 _Benoit Cloitre_, Aug 17 2002