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Search: id:A014643
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| A014643 |
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Triangular array starting with {1,1}; then i-th term in a row gives number of i's in next row. |
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+0
2
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| 1, 1, 1, 2, 1, 2, 2, 1, 2, 2, 3, 3, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11
(list; table; graph; listen)
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OFFSET
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1,4
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EXAMPLE
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{1,1},{1,2},{1,2,2},{1,2,2,3,3},...
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CROSSREFS
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Cf. A014644, A011784. Rows converge to A001462.
Sequence in context: A007895 A053260 A140223 this_sequence A118382 A007723 A067437
Adjacent sequences: A014640 A014641 A014642 this_sequence A014644 A014645 A014646
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KEYWORD
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tabl,nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Patrick De Geest (pdg(AT)worldofnumbers.com)
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