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 A069309 #10 Apr 26 2024 03:05:35 %S A069309 341,7556,172143,3958316,91369811,2112274668,48861110849, %T A069309 1130534931080,26160665637805,605385196535596,14009490587031167, %U A069309 324202249915245972,7502586497280931603,173622714928362682332,4017929413014868925321,92981844689395440980600 %N A069309 Number of 5 X n binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column. %H A069309 Sean A. Irvine, <a href="/A069309/b069309.txt">Table of n, a(n) for n = 2..200</a> %Y A069309 Cf. 2 X n A069306, 3 X n A069307, 4 X n A069308, 6 X n A069310, 7 X n A069311, 8 X n A069312, 9 X n A069313, 10 X n A069314, 11 X n A069315, 12 X n A069316, 13 X n A069317, 14 X n A069318, 15 X n A069319, 16 X n A069320, by columns A069294-A069305. %K A069309 nonn %O A069309 2,1 %A A069309 _R. H. Hardin_, Mar 14 2002