OFFSET
10,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 10..1000
FORMULA
G.f.: (40320*x^15 +40320*x^14 +48860*x^13 +166984*x^12 +71309*x^11 +116207*x^10 +54005*x^9 +42266*x^8 +16992*x^7 +8686*x^6 +2664*x^5 +964*x^4 +204*x^3 +52*x^2 +6*x+1) *x^10 / ((x-1) *(8*x-1) *(6*x-1) *(4*x-1) *(3*x-1) *(2*x-1) *(5*x-1) *(7*x-1) *(x+1) *(x^2+x+1) *(7*x^2+x+1) *(3*x^2+x+1) *(2*x^2+x+1) *(4*x^2+x+1) *(5*x^2+x+1) *(8*x^2+x+1) *(6*x^2+x+1)).
EXAMPLE
a(10) = 1: 1|2|3|4|5|6|7|8|9|10.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Aug 20 2015
STATUS
approved