A369816 - OEIS

A369816

Expansion of 1/(1 - x^5 - x^7).

1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 2, 0, 1, 1, 0, 3, 0, 3, 1, 1, 4, 0, 6, 1, 4, 5, 1, 10, 1, 10, 6, 5, 15, 2, 20, 7, 15, 21, 7, 35, 9, 35, 28, 22, 56, 16, 70, 37, 57, 84, 38, 126, 53, 127, 121, 95, 210, 91, 253, 174, 222, 331, 186, 463, 265, 475, 505, 408, 794, 451, 938, 770, 883, 1299, 859, 1732, 1221

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OFFSET

0,13

COMMENTS

Number of compositions of n into parts 5 and 7.

LINKS

Table of n, a(n) for n=0..78.

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,1,0,1).

FORMULA

a(n) = a(n-5) + a(n-7).

Gf.: 1/((1-x+x^2)*(1+x-x^3-x^4-x^5)) . - R. J. Mathar, Jul 03 2024

PROG