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Search: id:A131227
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| 1, 2, 3, 1, 2, 5, 2, 1, 2, 7, 1, 2, 1, 2, 9, 2, 1, 2, 1, 2, 11, 1, 2, 1, 2, 1, 2, 13, 2, 1, 2, 1, 2, 1, 2, 15, 1, 2, 1, 2, 1, 2, 1, 2, 17, 2, 1, 2, 1, 2, 1, 2, 1, 2, 19
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums = A047383, numbers congruent to {1,5} mod 7: (1, 5, 8, 12, 15, 19,...)
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FORMULA
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2*A051340 - A128174 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 3;
1, 2, 5;
2, 1, 2, 7;
1, 2, 1, 2, 9;
2, 1, 2, 1, 2, 11;
1, 2, 1, 2, 1, 2, 13;
...
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CROSSREFS
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Cf. A051340, A128174, A047383, A131228, A131229.
Adjacent sequences: A131224 A131225 A131226 this_sequence A131228 A131229 A131230
Sequence in context: A035459 A048232 A139246 this_sequence A050981 A053452 A023986
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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), Jun 20 2007
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