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A092241 Triangle read by rows: row n gives coefficients of (1+x+x^2)^n mod n. 1
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; text; internal format)
OFFSET

0,19

LINKS

Table of n, a(n) for n=0..99.

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]

MAPLE

f := n -> seriestolist( series( expand( (1+x+x^2)^n ) mod n, x, 2*n+1));

CROSSREFS

Cf. A053200.

Sequence in context: A238801 A095704 A163496 * A336124 A256580 A213266

Adjacent sequences:  A092238 A092239 A092240 * A092242 A092243 A092244

KEYWORD

nonn,tabf

AUTHOR

N. J. A. Sloane, Feb 20 2004

STATUS

approved

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Last modified January 19 01:11 EST 2021. Contains 340262 sequences. (Running on oeis4.)