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Search: id:A105545
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| A105545 |
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Matrix cube of triangle A105540 and, in this flattened form as read by rows, also equals column 2 of A105540. |
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+0
2
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| 1, 3, 1, 9, 6, 1, 21, 21, 9, 1, 51, 54, 39, 12, 1, 142, 165, 111, 63, 15, 1, 325, 507, 387, 198, 93, 18, 1, 722, 1010, 1332, 753, 321, 129, 21, 1, 1909, 3346, 2427, 2905, 1299, 486, 171, 24, 1, 3507, 6972, 10724, 4954, 5586, 2061, 699, 219, 27, 1, 9110, 15290
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Triangular matrix A105540 has the property that column n equals A105540^(n+1) when flattened as read by rows.
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EXAMPLE
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Triangle begins:
1;
3,1;
9,6,1;
21,21,9,1;
51,54,39,12,1;
142,165,111,63,15,1;
325,507,387,198,93,18,1;
722,1010,1332,753,321,129,21,1;
1909,3346,2427,2905,1299,486,171,24,1;
3507,6972,10724,4954,5586,2061,699,219,27,1; ...
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CROSSREFS
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Cf. A105540, A105542.
Sequence in context: A077895 A105539 A132819 this_sequence A164942 A027465 A157393
Adjacent sequences: A105542 A105543 A105544 this_sequence A105546 A105547 A105548
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KEYWORD
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nonn,tabl
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Apr 13 2005
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