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Search: id:A154108
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| A154108 |
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A000110 / (1,2,3,...): (convolved with (1,2,3,...) = Bell numbers. |
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+0
3
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| 1, 0, 2, 7, 27, 114, 523, 2589, 13744, 77821, 467767, 2972432, 19895813, 139824045
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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Convolved with (1,2,3,...) = Bell numbers starting (1, 2, 5, 15, 52,...);
equivalent to row sums of triangle A154109 = (1, 2, 5, 15, 52,...).
Apparently a variant of A011965. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 07 2009]
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FORMULA
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A000110 / (1,2,3,...); where A000110 (the Bell numbers) begin with offset 1:
(1, 2, 5, 15, 52, 203, 877,...).
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EXAMPLE
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A000110(5) = 52 =(1, 0, 2, 7, 27 convolved with (1, 2, 3, 4, 5) = (5 + 0 + 6 + 14 + 27).
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CROSSREFS
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A000110, A154109
Adjacent sequences: A154105 A154106 A154107 this_sequence A154109 A154110 A154111
Sequence in context: A150628 A106225 A127897 this_sequence A011965 A150629 A150630
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 04 2009
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