A200147 Number of 0..1 arrays x(0..n-1) of n elements with zero n-1st difference.

1, 2, 2, 4, 2, 8, 2, 16, 6, 32, 2, 64, 2, 144, 14, 256, 2, 512, 2, 1024, 6, 2048, 2, 4096, 50, 8192, 6, 16384, 2, 34816, 2, 66176, 6, 147456, 130, 262168, 2, 524288, 38, 1048576, 2, 2127872, 2, 4194304, 134, 8388608, 2, 17825792, 4098, 33554432, 6, 67108864

Offset: 1

Author

R. H. Hardin, Nov 13 2011

Keywords

• nonn

Comments

Column 1 of A200154.

Examples

			All solutions for n=6
..0....0....0....1....1....0....1....1
..0....1....0....1....0....1....0....1
..1....1....0....0....1....0....0....1
..1....1....0....0....1....0....0....1
..0....1....0....1....0....1....0....1
..0....0....0....1....1....0....1....1
		

Links

• Eugen J. Ionascu, Bisecting binomial coefficients (II), arXiv preprint arXiv:1712.01243, 2017
• Eugen J. Ionascu, Thor Martinsen, Pantelimon Stanica, Bisecting binomial coefficients, arXiv:1610.02063 [math.CO], 2016. See p. 11.

Crossrefs

Cf. A200154.

Extensions

a(38)-a(52) added from Ionascu link by Michel Marcus, Oct 10 2016