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 A106468 Absolute value of inverse of number triangle A106465. 3
 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A 'mixed' sequence array : rows alternate between the rows of the sequence array for the sequence (1,0,1,0,0,0...) and the sequence array for the sequence (1,1,1,1,0,0,0,...). Column 2k has g.f. x^2k(1+x+x^2+x^3); column 2k+1 has g.f. x^(2k+1)(1+x^2). Row sums are A106469. A106468=mod(A106465^(-1),2). LINKS EXAMPLE Triangle begins 1; 1,1; 1,0,1; 1,1,1,1; 0,0,1,0,1; 0,0,1,1,1,1; 0,0,0,0,1,0,1; CROSSREFS Sequence in context: A156174 A187967 A106467 * A030317 A077009 A078556 Adjacent sequences:  A106465 A106466 A106467 * A106469 A106470 A106471 KEYWORD nonn,tabl AUTHOR Paul Barry, May 03 2005 STATUS approved

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Last modified August 3 11:48 EDT 2020. Contains 336198 sequences. (Running on oeis4.)