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 A134663 Triangle read by rows in which n-th row gives the expansion coefficients of (1+x+x^4)^n. 0
 1, 1, 1, 0, 0, 1, 1, 2, 1, 0, 2, 2, 0, 0, 1, 1, 3, 3, 1, 3, 6, 3, 0, 3, 3, 0, 0, 1, 1, 4, 6, 4, 5, 12, 12, 4, 6, 12, 6, 0, 4, 4, 0, 0, 1, 1, 5, 10, 10, 10, 21, 30, 20, 15, 30, 30, 10, 10, 20, 10, 0, 5, 5, 0, 0, 1, 1, 6, 15, 20, 21, 36, 61, 60, 45, 66, 90, 60, 35, 60, 60, 20, 15, 30, 15, 0, 6, 6, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 COMMENTS The n-th row has 4n+1 entries. LINKS S. R. Finch, P. Sebah and Z.-Q. Bai, Odd Entries in Pascal's Trinomial Triangle (arXiv:0802.2654) MATHEMATICA CoefficientList[(1+x+x^4)^n, x] CROSSREFS Cf. A027907, A038717. Sequence in context: A281228 A284575 A112178 * A000925 A258279 A258292 Adjacent sequences:  A134660 A134661 A134662 * A134664 A134665 A134666 KEYWORD nonn,tabf AUTHOR Steven Finch, Jan 25 2008 STATUS approved

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Last modified June 5 12:47 EDT 2020. Contains 334840 sequences. (Running on oeis4.)