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1, 2, 2, 2, 0, 3, 3, 4, 0, 4, 2, 0, 0, 0, 5, 4, 4, 6, 0, 0, 6, 2, 0, 0, 0, 0, 0, 7, 4, 6, 0, 8, 0, 0, 0, 8, 3, 0, 6, 0, 0, 0, 0, 0, 9, 4, 4, 0, 0, 10, 0, 0, 0, 0, 10
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Row sums = A007429: (1, 4, 5, 11, 7, 20, 9, 26, ...).
Left border = A000005: (1, 2, 2, 3, 2, 4, 2, ...).
A134577 * [1/1, 1/2, 1/3, ...] = A007425: (1, 3, 3, 6, 3, 9, 3, 10, ...).
A134577 * [1, 2, 3, ...] = A007433: (1, 6, 11, 27, 27, 66, ...).
A134577 * A000005 = A034761: (1, 6, 8, 23, 12, 48, ...).
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LINKS
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Table of n, a(n) for n=1..55.
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FORMULA
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A127170 * A127648 = A051731^2 * A127648 = A051731 * A127093.
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EXAMPLE
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First few rows of the triangle:
1;
2, 2;
2, 0, 3;
3, 4, 0, 4;
2, 0, 0, 0, 5
4, 4, 6, 0, 0, 6;
2, 0, 0, 0, 0, 0, 7;
4, 6, 0, 8, 0, 0, 0, 8;
...
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CROSSREFS
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Cf. A051731, A127170, A127648, A127093, A007429, A127170, A007433, A034761.
Sequence in context: A071443 A013586 A071441 * A071442 A124759 A071295
Adjacent sequences: A134574 A134575 A134576 * A134578 A134579 A134580
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KEYWORD
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nonn,tabl,more
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AUTHOR
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Gary W. Adamson, Nov 02 2007
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STATUS
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approved
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