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Search: id:A030037
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A030037 a(n+1)= Sum a(k)a(n-k), k = 0 ... [ 2n/5 ]. +0
1
1, 1, 1, 1, 2, 3, 6, 11, 20, 40, 77, 160, 319, 636, 1332, 2721, 5799, 12068, 25109, 53943, 113682, 245931, 523896, 1115239, 2425858, 5208339, 11388934, 24630843, 53194684, 116764483, 253764437, 559289434 (list; graph; listen)
OFFSET

0,5
CROSSREFS

Cf. A000992.

Sequence in context: A054177 A096080 A005230 this_sequence A077078 A077079 A079969

Adjacent sequences: A030034 A030035 A030036 this_sequence A030038 A030039 A030040

KEYWORD

nonn

AUTHOR

njas

page 1

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Last modified July 4 13:19 EDT 2008. Contains 140839 sequences.

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