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A092241
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Triangle read by rows: row n gives coefficients of (1+x+x^2)^n mod n.
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1
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0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 2, 0, 3, 0, 2, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 3, 2, 0, 0, 3, 0, 0, 2, 3, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 4, 0, 2, 0, 0, 0, 3, 0, 0, 0, 2, 0, 4, 0, 1, 1, 0, 0, 3, 0, 0, 6, 0, 0, 7, 0, 0, 6, 0, 0, 3, 0, 0, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,19
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EXAMPLE
| Triangle begins:
[0]
[0, 0, 0]
[1, 0, 1, 0, 1]
[1, 0, 0, 1, 0, 0, 1]
[1, 0, 2, 0, 3, 0, 2, 0, 1]
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]
[1, 0, 3, 2, 0, 0, 3, 0, 0, 2, 3, 0, 1]
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MAPLE
| f := n -> seriestolist( series( expand( (1+x+x^2)^n ) mod n, x, 2*n+1));
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CROSSREFS
| Cf. A053200.
Sequence in context: A133735 A095704 A163496 * A128144 A128145 A128143
Adjacent sequences: A092238 A092239 A092240 * A092242 A092243 A092244
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Feb 20 2004
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