cp's OEIS Frontend

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.

A229147 a(n) = n^4*(3*n+2).

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%I A229147 #16 Jul 17 2024 09:00:40
%S A229147 0,5,128,891,3584,10625,25920,55223,106496,190269,320000,512435,
%T A229147 787968,1171001,1690304,2379375,3276800,4426613,5878656,7688939,
%U A229147 9920000,12641265,15929408,19868711,24551424,30078125,36558080,44109603,52860416,62948009,74520000
%N A229147 a(n) = n^4*(3*n+2).
%C A229147 Number of ascending runs in {1,...,n}^5.
%H A229147 Alois P. Heinz, <a href="/A229147/b229147.txt">Table of n, a(n) for n = 0..1000</a>
%H A229147 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (6,-15,20,-15,6,-1).
%F A229147 G.f.: (x^4+58*x^3+198*x^2+98*x+5)*x/(x-1)^6.
%F A229147 a(0)=0, a(1)=5, a(2)=128, a(3)=891, a(4)=3584, a(5)=10625, a(n)= 6*a(n-1)- 15*a(n-2)+ 20*a(n-3)- 15*a(n-4)+ 6*a(n-5)- a(n-6). - _Harvey P. Dale_, Aug 14 2015
%F A229147 E.g.f.: exp(x)*x*(5 + 59*x + 87*x^2 + 32*x^3 + 3*x^4). - _Stefano Spezia_, Jul 17 2024
%p A229147 a:= n-> n^4*(3*n+2):
%p A229147 seq(a(n), n=0..40);
%t A229147 Table[n^4 (3n+2),{n,0,30}] (* or *) LinearRecurrence[{6,-15,20,-15,6,-1},{0,5,128,891,3584,10625},40] (* _Harvey P. Dale_, Aug 14 2015 *)
%Y A229147 Row n=5 of A229079.
%Y A229147 Cf. A000583, A016789.
%K A229147 nonn,easy
%O A229147 0,2
%A A229147 _Alois P. Heinz_, Sep 15 2013