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 A099238 Square array read by antidiagonals with rows generated by 1/(1-x-x^(k+1)). 4
 1, 1, 2, 1, 1, 4, 1, 1, 2, 8, 1, 1, 1, 3, 16, 1, 1, 1, 2, 5, 32, 1, 1, 1, 1, 3, 8, 64, 1, 1, 1, 1, 2, 4, 13, 128, 1, 1, 1, 1, 1, 3, 6, 21, 256, 1, 1, 1, 1, 1, 2, 4, 9, 34, 512, 1, 1, 1, 1, 1, 1, 3, 5, 13, 55, 1024, 1, 1, 1, 1, 1, 1, 2, 4, 7, 19, 89, 2048 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Sections of rows are given by array A099233. Sums of antidiagonals yield A097939. LINKS FORMULA Square array T(n, k) = Sum_{j=0..floor(n/(k+1))} binomial(n-k*j, j), n, k>=0. EXAMPLE Rows begin 1,   2,   4,   8,  16,  32,  64, 128, 256, ... (A000079) 1,   1,   2,   3,   5,   8,  13,  21,  34, ... (A000045) 1,   1,   1,   2,   3,   4,   6,   9,  13, ... (A000930) 1,   1,   1,   1,   2,   3,   4,   5,   7, ... (A003269) 1,   1,   1,   1,   1,   2,   3,   4,   5, ... (A003520) CROSSREFS Sequence in context: A249694 A192005 A205592 * A141450 A209690 A061462 Adjacent sequences:  A099235 A099236 A099237 * A099239 A099240 A099241 KEYWORD easy,nonn,tabl,changed AUTHOR Paul Barry, Oct 08 2004 STATUS approved

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