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A028295 n^6-(883/60)*n^5+(157/3)*n^4+(2155/12)*n^3-(4570/3)*n^2+(42767/15)*n-967. 0
133, 1903, 10561, 38015, 106461, 252737, 533397, 1030505, 1858149, 3169675, 5165641 (list; graph; refs; listen; history; text; internal format)
OFFSET

6,1

COMMENTS

Old name was: "Number of stacks of n pikelets, distance 6 flips from a well-ordered stack".

LINKS

Table of n, a(n) for n=6..16.

Index entries for linear recurrences with constant coefficients, signature (7,-21,35,-35,21,-7,1).

FORMULA

G.f. x^6*(-133-972*x-33*x^2+604*x^3-187*x^4-2*x^5+3*x^6) / (x-1)^7 . - R. J. Mathar, Jun 21 2011

CROSSREFS

Sequence in context: A274175 A038491 A020265 * A262121 A254684 A133240

Adjacent sequences:  A028292 A028293 A028294 * A028296 A028297 A028298

KEYWORD

nonn,easy

AUTHOR

R. K. Guy

EXTENSIONS

Entry revised by N. J. A. Sloane, Jun 15 2014

STATUS

approved

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Last modified February 21 06:43 EST 2018. Contains 299390 sequences. (Running on oeis4.)