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Search: id:A143315
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| 1, 3, 1, 5, 0, 1, 7, 3, 0, 1, 9, 0, 0, 0, 1, 11, 5, 3, 0, 0, 1, 13, 0, 0, 0, 0, 0, 1, 15, 7, 0, 3, 0, 0, 0, 1, 17, 0, 5, 0, 0, 0, 0, 0, 1, 19, 9, 0, 0, 30, 0, 0, 0, 1, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 23, 11, 7, 5, 0, 3, 0, 0, 0, 0, 0, 1, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
(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 = A129235: (1, 4, 6, 11, 10, 20, 14,...).
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FORMULA
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Triangle read by rows, 2*A126988 - A000012, 1<=k<=n. By columns, replace the 1's in A051731 in succession with (1, 3, 5, 7,...).
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EXAMPLE
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First few rows of the triangle =
1;
3, 1;
5, 0, 1;
7, 3, 0, 1;
9, 0, 0, 0, 1;
11, 5, 3, 0, 0, 1;
13, 0, 0, 0, 0, 0, 1;
15, 7, 0, 3, 0, 0, 0, 1;
...
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CROSSREFS
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Cf. A126988, A129235, A051731.
Sequence in context: A125846 A143677 A143467 this_sequence A120444 A094919 A143069
Adjacent sequences: A143312 A143313 A143314 this_sequence A143316 A143317 A143318
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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), Aug 06 2008
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