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Search: id:A131779
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| 1, 3, 1, 1, 3, 1, 3, 1, 5, 1, 1, 3, 5, 5, 1, 3, 1, 9, 5, 7, 1, 1, 3, 9, 9, 11, 7, 13, 1, 13, 9, 21, 11, 9, 1, 1, 3, 13, 13, 29, 21, 19, 9, 1, 3, 1, 17, 13, 43, 29, 41, 19, 11, 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 = A131780: (1, 4, 5, 10, 15, 26, 41,...).
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FORMULA
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2*A065941 - A000012(signed by columns + - + -,...)
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EXAMPLE
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First few rows of the triangle are:
1;
3, 1;
1, 3, 1;
3, 1, 5, 1;
1, 3, 5, 5, 1;
3, 1, 9, 5, 7, 1;
1, 3, 9, 9, 11, 7, 1;
...
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CROSSREFS
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Cf. A065941, A131780, A000012.
Sequence in context: A104146 A133705 A046111 this_sequence A131775 A035691 A131781
Adjacent sequences: A131776 A131777 A131778 this_sequence A131780 A131781 A131782
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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), Jul 14 2007
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