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Search: id:A127470
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| 1, 4, 2, 9, 0, 6, 16, 12, 0, 8, 25, 0, 0, 0, 20, 36, 0, 0, 0, 0, 0, 42, 64, 56, 0, 48, 0, 0, 0, 32, 81, 0, 72, 0, 0, 0, 0, 0, 54
(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 = A127469; left column = squares, right border = n*phi(n), A002618
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FORMULA
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A127466 * A051731 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
4, 2;
9, 0, 6;
16, 12, 0, 8;
25, 0, 0, 0, 20;
36, 18, 24, 0, 0, 12;
49, 0, 0, 0, 0, 0, 42;
64, 56, 0, 48, 0, 0, 0, 32;
81, 0, 72, 0, 0, 0, 0, 0, 54;
...
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CROSSREFS
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Cf. A127466, A051731, A127469, A061949.
Sequence in context: A072562 A143311 A016696 this_sequence A010649 A067721 A159899
Adjacent sequences: A127467 A127468 A127469 this_sequence A127471 A127472 A127473
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KEYWORD
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nonn,tabl,uned
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 15 2007
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