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Search: id:A127737
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| 1, 3, 4, 3, 7, 9, 3, 7, 13, 16, 3, 7, 13, 21, 25, 3, 7, 13, 21, 31, 36, 3, 7, 13, 21, 31, 43, 49, 3, 7, 13, 21, 31, 43, 57, 64, 3, 7, 13, 21, 31, 43, 57, 73, 81, 3, 7, 13, 21, 31, 43, 57, 73, 91, 100
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Deleting the right border (1, 4, 9, 16,...), rows tend to A002061 starting (3, 7, 13, 21, 31,...). Row sums = A108766: (1, 7, 19, 39, 69, 111,...)
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FORMULA
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A002260 * A127701 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
3, 4;
3, 7, 9;
3, 7, 13, 16;
3, 7, 13, 21, 25;
...
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CROSSREFS
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Cf. A002260, A127701, A108766, A002061.
Adjacent sequences: A127734 A127735 A127736 this_sequence A127738 A127739 A127740
Sequence in context: A033634 A111970 A141730 this_sequence A077005 A134065 A015887
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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 27 2007
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