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Search: id:A130584
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| 1, 2, 1, 4, 2, 2, 8, 4, 6, 2, 16, 8, 12, 8, 4, 32, 16, 22, 20, 20, 2, 64, 32, 42, 40, 60, 12, 6, 128, 64, 84, 72, 140, 42, 42, 4, 256, 128, 170, 128, 280, 112, 168, 32, 6, 512, 256, 342, 240, 508, 252, 504, 144, 54, 4
(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 = A001792, (1, 3, 8, 20, 48, 112,...) binomial transform of the natural numbers. Right border = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6, 4,...).
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FORMULA
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Binomial transform of A054522 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
4, 2, 2;
8, 4, 6, 2;
16, 8, 12, 8, 4;
32, 16, 22, 20, 20, 2;
64, 32, 42, 40, 60, 12, 6;
...
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CROSSREFS
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Cf. A007318, A054522, A001792, A130585, A000010.
Sequence in context: A086685 A094571 A104733 this_sequence A078458 A033317 A007733
Adjacent sequences: A130581 A130582 A130583 this_sequence A130585 A130586 A130587
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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 06 2007
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