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A165676 Fourth right hand column of triangle A165674 4

%I #6 Aug 11 2020 18:16:01

%S 50,154,342,638,1066,1650,2414,3382,4578,6026,7750,9774,12122,14818,

%T 17886,21350,25234,29562,34358,39646,45450,51794,58702,66198,74306,

%U 83050,92454,102542,113338,124866,137150,150214,164082,178778

%N Fourth right hand column of triangle A165674

%C The recurrence relation leads to Pascal's triangle A007318, the a(n) formula to Wiggen's triangle A028421 and the o.g.f to Wood's polynomials A126671; see A165674.

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-6,4,-1).

%F a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4)

%F a(n) = 6 + 22*n + 18*n^2 + 4*n^3

%F Gf(z) = (0*z^5 - 6*z^4 + 26*z^3 - 46*z^2 + 50*z)/(z-1)^4

%Y Cf. A165674, A007318, A028421, A126671.

%K easy,nonn

%O 1,1

%A _Johannes W. Meijer_, Oct 05 2009

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)