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 A114002 Expansion of x^k(1+x^(k+1))/(1-x^(k+1)). 3
 1, 2, 1, 2, 0, 1, 2, 2, 0, 1, 2, 0, 0, 0, 1, 2, 2, 2, 0, 0, 1, 2, 0, 0, 0, 0, 0, 1, 2, 2, 0, 2, 0, 0, 0, 1, 2, 0, 2, 0, 0, 0, 0, 0, 1, 2, 2, 0, 0, 2, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 2, 2, 0, 2, 0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Inverse is A114004. Row sums are A114003. LINKS FORMULA Column k has g.f. x^k(1+x^(k+1))/(1-x^(k+1)) Equals 2*A051731 - I, I = Identity matrix. - Gary W. Adamson, Nov 07 2007 EXAMPLE Triangle begins 1; 2,1; 2,0,1; 2,2,0,1; 2,0,0,0,1; 2,2,2,0,0,1; 2,0,0,0,0,0,1; CROSSREFS Cf. A051731. Sequence in context: A127442 A357524 A115628 * A114004 A306518 A333310 Adjacent sequences: A113999 A114000 A114001 * A114003 A114004 A114005 KEYWORD easy,nonn,tabl AUTHOR Paul Barry, Nov 12 2005 STATUS approved

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Last modified February 7 07:00 EST 2023. Contains 360112 sequences. (Running on oeis4.)