

A025782


Expansion of 1/((1x)*(1x^6)*(1x^7)).


0



1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 3, 3, 4, 5, 6, 6, 6, 6, 7, 8, 9, 10, 10, 10, 11, 12, 13, 14, 15, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 36, 38, 39, 40, 41, 42, 44, 46, 48, 49, 50, 51, 53
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OFFSET

0,7


COMMENTS

Number of partitions of n into parts 1, 6, and 7.  Joerg Arndt, Oct 12 2014


LINKS



MATHEMATICA

CoefficientList[Series[1/((1x)(1x^6)(1x^7)), {x, 0, 60}], x] (* or *) LinearRecurrence[{1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1}, {1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 3, 3, 4, 5}, 70] (* Harvey P. Dale, Dec 30 2021 *)


PROG

(PARI) a(n)=round((n^2+14*n+18)/84+369830\7^(n%7)%7/7) \\ Tani Akinari, Oct 13 2014


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



