A224893 Number of subsets A of {0,...,n-1} such that A contains 0 and n-1, and |A+A| > |A-A|.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 2, 14, 16, 42, 92, 208, 382, 834, 1748, 3568, 7066, 14914, 28618, 60712, 120872, 240102, 483328, 992812, 1948804, 3975364, 7933368, 15876692, 31759760, 64035868, 126968066, 255821994

Offset: 1

Author

James Wilcox, Jul 24 2013

Keywords

• nonn

Comments

A222807(n) = Sum_{i=1..n} (n-i+1)*a(i).

Crossrefs

Cf. A222807.