

A193059


Number of size n nonnegative integer arrays with new values introduced in increasing order from 0, and no 4 consecutive elements totalling n or more


1



1, 2, 4, 11, 30, 103, 423, 1898, 9186, 48459, 277813, 1682335, 10842496, 73622545, 532098309, 4013332419, 31553670222, 258169433450, 2231159821028, 19826045896926, 182181813932571, 1733395478474786, 17237091890882863
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OFFSET

1,2


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..61


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....0....1....1....1....1....1....1....0....1....1....0
..2....2....0....1....1....1....1....0....0....1....0....1....1....1....2....1
..0....0....0....1....0....2....2....2....1....1....0....0....1....2....1....1
..1....0....0....2....2....0....2....1....2....2....2....0....1....2....0....2
..1....2....2....3....0....0....1....3....0....1....0....2....2....1....0....1
..1....0....2....0....0....0....0....1....1....0....3....2....0....2....3....3
..1....1....2....2....3....3....1....2....3....2....2....0....2....2....0....1


CROSSREFS

Sequence in context: A148159 A275310 A102814 * A034770 A276687 A298891
Adjacent sequences: A193056 A193057 A193058 * A193060 A193061 A193062


KEYWORD

nonn


AUTHOR

R. H. Hardin Jul 15 2011


STATUS

approved



