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A027774 (n+1)*C(n+1,14). 2
14, 225, 1920, 11560, 55080, 220932, 775200, 2441880, 7034940, 18795370, 47070144, 111435000, 251100200, 541574100, 1123264800, 2249204040, 4362680250, 8220658275, 15085939200, 27020703600, 47327171760, 81198579000, 136666699200, 225962211600, 367443055800 (list; graph; refs; listen; history; text; internal format)
OFFSET

13,1

COMMENTS

Number of 16-subsequences of [ 1, n ] with just 1 contiguous pair.

LINKS

T. D. Noe, Table of n, a(n) for n = 13..1000

Luis Manuel Rivera, Integer sequences and k-commuting permutations, arXiv preprint arXiv:1406.3081, 2014

FORMULA

G.f.: (14+x)*x^13/(1-x)^16.

MATHEMATICA

Table[(n+1)Binomial[n+1, 14], {n, 13, 40}] (* Harvey P. Dale, Nov 04 2017 *)

CROSSREFS

Sequence in context: A145269 A221582 A320762 * A099272 A273625 A120048

Adjacent sequences:  A027771 A027772 A027773 * A027775 A027776 A027777

KEYWORD

nonn,easy

AUTHOR

thi ngoc dinh (via R. K. Guy)

STATUS

approved

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Last modified November 20 17:09 EST 2019. Contains 329337 sequences. (Running on oeis4.)