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A055833 T(n,n-6), where T is the array in A055830. 1
13, 58, 162, 361, 701, 1239, 2044, 3198, 4797, 6952, 9790, 13455, 18109, 23933, 31128, 39916, 50541, 63270, 78394, 96229, 117117, 141427, 169556, 201930, 239005, 281268, 329238, 383467, 444541, 513081 (list; graph; refs; listen; history; text; internal format)
OFFSET

6,1

LINKS

Table of n, a(n) for n=6..35.

Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).

FORMULA

G.f.: -x^6*(-13+20*x-9*x^2+x^3) / (x-1)^6 . a(n) = (n-5) *(n-4) *(n^3 +19*n^2 +6*n -156)/120. - R. J. Mathar, Mar 13 2016

CROSSREFS

Sequence in context: A147019 A230988 A183317 * A103220 A086221 A272386

Adjacent sequences:  A055830 A055831 A055832 * A055834 A055835 A055836

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 28 2000

STATUS

approved

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Last modified November 13 17:34 EST 2019. Contains 329106 sequences. (Running on oeis4.)