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A156935 G.f. of the z^2 coefficients of the FP2 in the third column of the A156925 matrix 4
-11, -108, -425, 720, 25678, 255048, 1901298, 12339600, 73794315, 418519612, 2289264465, 12207642976, 63925371180, 330387702160, 1691454191604, 8600517968736, 43516016460465, 219401923888740 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..19.

FORMULA

a(n)=24*a(n-1)-254*a(n-2)+1568*a(n-3)-6291*a(n-4)+17296*a(n-5)- 33460*a(n-6)+45984*a(n-7)-44663*a(n-8)+29976*a(n-9)-13230*a(n-10)+3456*a(n-11)-405*a(n-12)

a(n)= 75/32+101/24*n-225/16*3^n+375/32*5^n+289/72*n^2-1/8*3^(1+n)*n^3-9/4*3^n*(n)^2- 15/2*3^n*n+19/8*n^3+ 61/72*n^4+1/6*n^5+1/72*n^6

G.f.: GF4(z;m=2) = z^2*(-11+156*z-627*z^2+736*z^3+591*z^4-1116*z^5-369*z^6)/((1-z)^7*(1-3*z)^4*(1-5*z))

CROSSREFS

Cf. A156933

Equals third column of A156925

Other columns A156934, A156936, A156937

Sequence in context: A001721 A193308 A080158 * A308965 A071380 A142423

Adjacent sequences:  A156932 A156933 A156934 * A156936 A156937 A156938

KEYWORD

easy,sign

AUTHOR

Johannes W. Meijer, Feb 20 2009

STATUS

approved

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Last modified May 28 00:30 EDT 2022. Contains 354110 sequences. (Running on oeis4.)