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A061320 Column 4 of A061314. 3
0, 5, 140, 6080, 186620, 3504380, 43599605, 392515340, 2738219580, 15571795365, 74962059260, 314303754380, 1173239918240, 3966582090380 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..13.

FORMULA

a(n) =A061318(n)+A061319(n)^2 =5*A061321(n).

G.f. -5*x*(1 +11*x +876*x^2 +19780*x^3 +215084*x^4 +1114665*x^5 +2936419*x^6 +4038928*x^7 +2936419*x^8 +1114665*x^9 +215084*x^10 +19780*x^11 +876*x^12 +11*x^13+x^14) ) / (x-1)^17 . - R. J. Mathar, Aug 11 2012

a(n) = n *(n+1) *(n^8+4*n^7+14*n^6+28*n^5+77*n^4+112*n^3+196*n^2+144*n+2304) *(n^2+n+4) *(n^4+2*n^3+5*n^2+4*n+36)/331776. - R. J. Mathar, Aug 11 2012

CROSSREFS

Sequence in context: A091058 A155177 A054323 * A193756 A136464 A203523

Adjacent sequences:  A061317 A061318 A061319 * A061321 A061322 A061323

KEYWORD

nonn

AUTHOR

Henry Bottomley, Apr 24 2001

STATUS

approved

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Last modified September 17 14:07 EDT 2021. Contains 347478 sequences. (Running on oeis4.)