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A159937
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Triangle read by rows, A054525 * A127478, as infinite lower triangular matrices.
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2
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1, 1, 1, 2, 0, 2, 2, 1, 0, 2, 4, 0, 0, 0, 4, 2, 2, 2, 0, 0, 2, 6, 0, 0, 0, 0, 0, 6, 4, 2, 0, 2, 0, 0, 0, 4, 6, 0, 4, 0, 0, 0, 0, 0, 6, 4, 4, 0, 0, 4, 0, 0, 0, 0, 4, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 4, 2, 4, 4, 0, 2, 0, 0, 0, 0, 0, 4
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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COMMENTS
| Row sums = A029935: (1, 2, 4, 5, 8, 8,...). Right and left borders = A000010, phi(n).
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FORMULA
| A054525 * A127478 = Mobius transform of triangle A127478.
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EXAMPLE
| First few rows of the triangle =
1;
1, 1;
2, 0, 2;
2, 1, 0, 2;
4, 0, 0, 0, 4;
2, 2, 2, 0, 0, 2;
6, 0, 0, 0, 0, 0, 6;
4, 2, 0, 2, 0, 0, 0, 4;
6, 0, 4, 0, 0, 0, 0, 0, 6;
4, 4, 0, 0, 4, 0, 0, 0, 0, 4;
10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10;
4, 2, 4, 4, 0, 2, 0, 0, 0, 0, 0, 4;
12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12;
6, 6, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 6;
8, 0, 8, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8;
...
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CROSSREFS
| Cf. A127478, A029935
Sequence in context: A082115 A161553 A099751 * A058728 A143751 A158950
Adjacent sequences: A159934 A159935 A159936 * A159938 A159939 A159940
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 26 2009
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