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 A027481 #19 Apr 08 2021 11:45:48 %S A027481 23,215,1035,3535,9730,23058,48930,95370,173745,299585,493493,782145, %T A027481 1199380,1787380,2597940,3693828,5150235,7056315,9516815,12653795, %U A027481 16608438,21542950,27642550,35117550,44205525,55173573,68320665,83980085,102521960,124355880 %N A027481 Second subdiagonal of triangle A027477, constructed from the Stirling numbers of the first kind. %F A027481 a(n) = A027477(n+2,n). %F A027481 Conjectures from _Chai Wah Wu_, Apr 08 2021: (Start) %F A027481 a(n) = 7*a(n-1) - 21*a(n-2) + 35*a(n-3) - 35*a(n-4) + 21*a(n-5) - 7*a(n-6) + a(n-7) for n > 9. %F A027481 G.f.: x^3*(-13*x^2 - 54*x - 23)/(x - 1)^7. (End) %Y A027481 Cf. A027477. %K A027481 nonn,easy %O A027481 3,1 %A A027481 _Olivier Gérard_ %E A027481 More terms from _Sean A. Irvine_, Nov 06 2019