

A193057


Number of size n nonnegative integer arrays with new values introduced in increasing order from 0, and no 2 consecutive elements totalling n or more


1



1, 2, 4, 13, 43, 179, 754, 3752, 18910, 107947, 626797, 4007984, 26177428, 184572504, 1333510143, 10251720776, 80925610461, 672581036971, 5745786626079, 51276472540865, 470474128209758, 4483074757033617, 43904371855787890
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OFFSET

1,2


LINKS

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


EXAMPLE

Some solutions for n=8
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....1....1....1....1....1....1....1....0....0....1....1....1....0....1....1
..2....2....2....1....2....2....2....0....0....1....2....2....1....1....1....2
..3....3....2....1....2....3....1....0....1....2....3....0....0....1....0....2
..1....2....1....0....2....1....1....2....0....3....3....3....0....0....2....1
..3....2....1....1....1....1....0....1....2....1....4....0....0....1....1....3
..4....3....2....2....2....1....0....3....1....3....0....3....1....1....3....0
..1....4....3....0....1....3....1....3....0....0....4....0....1....0....0....3


CROSSREFS

Sequence in context: A050624 A135501 A001548 * A115600 A007858 A153930
Adjacent sequences: A193054 A193055 A193056 * A193058 A193059 A193060


KEYWORD

nonn


AUTHOR

R. H. Hardin Jul 15 2011


STATUS

approved



