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A184434 Number of strings of numbers x(i=1..n) in 0..2 with sum i*x(i)^2 equal to n*4 1
1, 1, 3, 5, 8, 17, 31, 63, 129, 244, 458, 860, 1544, 2721, 4734, 8044, 13423, 22097, 35750, 57052, 89944, 139918, 215240, 327754, 493888, 737327, 1091368, 1601767, 2332587, 3372198, 4840788, 6903176, 9783032, 13780976, 19302810, 26891801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 2 of A184441

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

All solutions for n=5

..2....1....0....2....2....0....0....1

..2....0....2....0....0....2....0....1

..1....1....1....2....0....2....0....2

..0....2....1....1....2....0....0....0

..1....0....1....0....0....0....2....1

CROSSREFS

Sequence in context: A174011 A291223 A240532 * A196140 A240154 A112656

Adjacent sequences:  A184431 A184432 A184433 * A184435 A184436 A184437

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 14 2011

STATUS

approved

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Last modified July 18 19:00 EDT 2019. Contains 325144 sequences. (Running on oeis4.)