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A068044
Number of subsets of {1,2,3,...,n} that sum to 0 mod 32.
1
1, 1, 1, 1, 1, 1, 1, 1, 3, 14, 37, 71, 129, 253, 511, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824
OFFSET
0,9
FORMULA
G.f.: -(2*x^15+5*x^14-5*x^13-13*x^12-3*x^11+9*x^10+8*x^9+x^8-x^7-x^6-x^5-x^4-x^3-x^2-x+1) / (2*x-1). Colin Barker, Dec 23 2012
CROSSREFS
32nd row of A068009.
Sequence in context: A130287 A167858 A179132 * A141129 A143941 A162147
KEYWORD
nonn,easy
AUTHOR
Antti Karttunen, Feb 11 2002
STATUS
approved