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Search: id:A135222
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| 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 1, 4, 1, 1, 1, 4, 1, 5, 1, 1, 2, 1, 7, 1, 6, 1, 1, 1, 5, 1, 11, 1, 7, 1, 1, 2, 1, 11, 1, 16, 1, 8, 1, 1, 1, 6, 1, 21, 1, 22, 1, 9, 1, 1
(list; table; graph; listen)
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OFFSET
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1,4
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COMMENT
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Row sums = A081659: (1, 2 4, 6, 9, 13, 19, 28,...).
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FORMULA
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A049310 + A000012 - Identity matrix, as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 1;
2, 1, 1;
1, 3, 1, 1;
2, 1, 4, 1, 1;
1, 4, 1, 5, 1, 1;
2, 1, 7, 1, 6, 1, 1;
1, 5, 1, 11, 1, 7, 1, 1;
2, 1, 11, 1, 16, 1, 8, 1, 1;
...
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CROSSREFS
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Cf. A049310, A081659.
Adjacent sequences: A135219 A135220 A135221 this_sequence A135223 A135224 A135225
Sequence in context: A001492 A054576 A138904 this_sequence A124094 A101950 A104562
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 23 2007
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