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 A011854 #18 Jun 13 2023 11:11:32 %S A011854 0,0,0,0,0,0,0,0,0,1,5,20,61,160,375,804,1608,3038,5469,9447,15746, %T A011854 25436,39971,61289,91933,135196,195284,277509,388513,536518,731615, %U A011854 986090,1314787,1735519,2269525,2941977 %N A011854 a(n) = floor(binomial(n,8)/8). %H A011854 <a href="/index/Rec#order_65">Index entries for linear recurrences with constant coefficients</a>, signature (9, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -10, 10, -36, 84, -126, 126, -84, 36, -9, 1). %o A011854 (Sage) [floor(binomial(n,8)/8) for n in range(0,36)] # _Zerinvary Lajos_, Dec 01 2009 %o A011854 (PARI) a(n) = binomial(n, 8)\8; \\ _Michel Marcus_, Jan 28 2018 %Y A011854 A column of triangle A011857. %K A011854 nonn %O A011854 0,11 %A A011854 _N. J. A. Sloane_