login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A200147 Number of 0..1 arrays x(0..n-1) of n elements with zero n-1st difference. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 1 of A200154.

LINKS

Table of n, a(n) for n=1..52.

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.

EXAMPLE

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

CROSSREFS

Cf. A200154.

Sequence in context: A304102 A096154 A270365 * A235063 A084540 A297112

Adjacent sequences:  A200144 A200145 A200146 * A200148 A200149 A200150

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 13 2011

EXTENSIONS

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

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 18 15:21 EDT 2019. Contains 328162 sequences. (Running on oeis4.)