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 A002761 #16 Apr 09 2019 05:12:46
%S A002761 4,36,624,3744,5108,10200,54912,123552,1098240,1302540
%N A002761 Number of ways of getting a royal flush, other straight flush, 4 of a kind, full house, other flush, other straight, 3 of a kind, 2 pair, a pair or nothing in 5-card poker.
%D A002761 J. Scarne, Scarne's Complete Guide to Gambling, Simon and Schuster, 1961, p. 582.
%H A002761 <a href="/index/Poi#poker">Index entries for sequences related to poker</a>
%F A002761 From _Jianing Song_, Apr 06 2019: (Start)
%F A002761 a(n) = A002806(11-n) for 1 <= n <= 10.
%F A002761 Sum_{i=1..10} a(i) = binomial(52,5) = A017768(5). (End)
%Y A002761 Cf. A002806, A002847.
%K A002761 fini,full,nonn
%O A002761 1,1
%A A002761 _N. J. A. Sloane_, Koreen M Mielke (mielkk72(AT)VAXA.CIS.UWOSH.EDU)