OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (63, -1302, 11160, -41664, 64512, -32768).
FORMULA
G.f.: -(2048*x^9 -320*x^8 +4220*x^7 +5227*x^6 +14870*x^5 -23958*x^4 +8798*x^3 -1180*x^2 +61*x -1) / Product_{j=0..5} (2^j*x-1).
a(n) = [x^2^(n-1)] 1/(1-x) * 1/Product_{j=0..4} (1-x^(2^j)) for n>0.
MAPLE
a:= n-> `if`(n<5, [1, 2, 4, 10, 36][n+1], (Matrix(6, (i, j)-> `if`(i=j-1, 1, `if`(i=6, [-32768, 64512, -41664, 11160, -1302, 63][j], 0)))^(n-5). <<202, 1827, 25509, 497097, 12070289, 333620001>>)[1, 1]): seq(a(n), n=0..20);
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Mar 26 2012
STATUS
approved