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 A002806 #14 Apr 09 2019 05:12:56
%S A002806 1302540,1098240,123552,54912,10200,5108,3744,624,36,4
%N A002806 Number of ways of getting nothing, a pair, 2 pair, 3 of a kind, other straight, other flush, full house, 4 of a kind, other straight flush, or a royal flush in 5-card poker.
%D A002806 J. Scarne, Scarne's Complete Guide to Gambling, Simon and Schuster, 1961, p. 582.
%H A002806 <a href="/index/Poi#poker">Index entries for sequences related to poker</a>
%F A002806 From _Jianing Song_, Apr 06 2019: (Start)
%F A002806 a(n) = A002761(11-n) for 1 <= n <= 10.
%F A002806 Sum_{i=1..10} a(i) = binomial(52,5) = A017768(5). (End)
%Y A002806 Cf. A002761.
%K A002806 fini,full,nonn
%O A002806 1,1
%A A002806 _N. J. A. Sloane_, Koreen M Mielke (mielkk72(AT)VAXA.CIS.UWOSH.EDU)