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Search: id:A131231
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| 1, 6, 1, 7, 3, 1, 12, 1, 3, 1, 13, 3, 1, 3, 1, 18, 1, 3, 1, 3, 1, 19, 3, 1, 3, 1, 3, 1, 24, 1, 3, 1, 3, 1, 3, 1, 25, 3, 1, 3, 1, 3, 1, 3, 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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Left column = A047225, numbers congruent to {0,1} mod 6: (1, 6, 7, 12, 13, 18, 19,...). Row sums = A131229, numbers congruent to {1,7} mod 10: (1, 7, 11, 17,...).
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FORMULA
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3*A130296 - 2*A128174 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
6, 1;
7, 3, 1;
12, 1, 3, 1;
13, 3, 1, 3, 1;
...
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CROSSREFS
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Cf. A131229, A047225, A130296, A128174.
Sequence in context: A028323 A137235 A021166 this_sequence A110942 A082830 A046902
Adjacent sequences: A131228 A131229 A131230 this_sequence A131232 A131233 A131234
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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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