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Search: id:A092241
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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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+0
2
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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; listen)
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OFFSET
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0,19
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EXAMPLE
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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
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f := n -> seriestolist( series( expand( (1+x+x^2)^n ) mod n, x, 2*n+1));
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CROSSREFS
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Cf. A053200.
Sequence in context: A133735 A095704 A163496 this_sequence A128144 A128145 A128143
Adjacent sequences: A092238 A092239 A092240 this_sequence A092242 A092243 A092244
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Feb 20 2004
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