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.

A053106 a(n) = ((7*n+10)(!^7))/10(1^7), related to A034830 (((7*n+3)(!^7))/3 sept-, or 7-factorials).

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%I A053106 #17 Sep 08 2022 08:45:00
%S A053106 1,17,408,12648,480624,21628080,1124660160,66354949440,4379426663040,
%T A053106 319698146401920,25575851712153600,2225099098957363200,
%U A053106 209159315301992140800,21125090845501206220800
%N A053106 a(n) = ((7*n+10)(!^7))/10(1^7), related to A034830 (((7*n+3)(!^7))/3 sept-, or 7-factorials).
%C A053106 Row m=10 of the array A(8; m,n) := ((7*n+m)(!^7))/m(!^7), m >= 0, n >= 0.
%H A053106 G. C. Greubel, <a href="/A053106/b053106.txt">Table of n, a(n) for n = 0..337</a>
%F A053106 a(n) = ((7*n+10)(!^7))/10(!^7) = A034830(n+2)/10.
%F A053106 E.g.f.: 1/(1-7*x)^(17/7).
%t A053106 s=1;lst={s};Do[s+=n*s;AppendTo[lst, s], {n, 16, 5!, 7}];lst (* _Vladimir Joseph Stephan Orlovsky_, Nov 08 2008 *)
%t A053106 With[{nn = 30}, CoefficientList[Series[1/(1 - 7*x)^(17/7), {x, 0, nn}], x]*Range[0, nn]!] (* _G. C. Greubel_, Aug 16 2018 *)
%o A053106 (PARI) x='x+O('x^30); Vec(serlaplace(1/(1-7*x)^(17/7))) \\ _G. C. Greubel_, Aug 16 2018
%o A053106 (Magma) m:=30; R<x>:=PowerSeriesRing(Rationals(), m); b:=Coefficients(R!(1/(1-7*x)^(17/7))); [Factorial(n-1)*b[n]: n in [1..m]]; // _G. C. Greubel_, Aug 16 2018
%Y A053106 Cf. A051188, A045754(n+1), A034829-A034834(n+1), A053104-A053106 (rows m=0..10).
%K A053106 easy,nonn
%O A053106 0,2
%A A053106 _Wolfdieter Lang_