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Search: id:A136534
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| 1, 2, 2, 4, 8, 3, 7, 24, 21, 4, 11, 60, 90, 44, 5, 16, 130, 300, 260, 80, 6, 22, 2252, 840, 1120, 630, 132, 7, 29, 448, 2058, 3920, 3430, 1344, 203, 8, 37, 744, 4536, 11760, 14700, 9072, 2604, 296, 9, 46, 1170, 9180, 31248, 52920, 46872, 21420, 4680, 414, 10
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A001791: (1, 4, 15, 56, 210,...). Left Column = A000124: (1, 2, 4, 7, 11, 16, 22,...).
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FORMULA
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A001263 * A128064 (unsigned), A001263 = the Narayana triangle, A128064 = an infinite lower triangular matrix with (1, 2, 3,...) in the main and subdiagonals.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 2;
4, 8, 3;
7, 24, 21, 4;
11, 60, 90, 44, 5;
16, 130, 300, 260, 80, 6;
22, 252, 840, 1120, 630, 132, 7;
...
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CROSSREFS
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Cf. A001263, A128064, A001791, A000124.
Adjacent sequences: A136531 A136532 A136533 this_sequence A136535 A136536 A136537
Sequence in context: A112059 A093094 A045777 this_sequence A121175 A038208 A116694
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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), Jan 04 2008
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