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 A334781 Array read by antidiagonals: T(n,k) = Sum_{i=1..n} binomial(1+i,2)^k. 7
 0, 0, 1, 0, 1, 2, 0, 1, 4, 3, 0, 1, 10, 10, 4, 0, 1, 28, 46, 20, 5, 0, 1, 82, 244, 146, 35, 6, 0, 1, 244, 1378, 1244, 371, 56, 7, 0, 1, 730, 8020, 11378, 4619, 812, 84, 8, 0, 1, 2188, 47386, 108020, 62003, 13880, 1596, 120, 9, 0, 1, 6562, 282124, 1047386, 867395, 256484, 35832, 2892, 165, 10 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS Andrew Howroyd, Table of n, a(n) for n = 0..1325 FORMULA T(n,k) = Sum_{i=0..2*(k-1)} A154283(k,i) * binomial(n+2+i, 2*k+i) for k > 0. EXAMPLE Array begins: =============================================================== n\k | 0  1    2     3      4        5         6           7 ----|----------------------------------------------------------   0 | 0  0    0     0      0        0         0           0 ...   1 | 1  1    1     1      1        1         1           1 ...   2 | 2  4   10    28     82      244       730        2188 ...   3 | 3 10   46   244   1378     8020     47386      282124 ...   4 | 4 20  146  1244  11378   108020   1047386    10282124 ...   5 | 5 35  371  4619  62003   867395  12438011   181141499 ...   6 | 6 56  812 13880 256484  4951496  98204132  1982230040 ...   7 | 7 84 1596 35832 871140 22161864 580094436 15475158552 ...   ... PROG (PARI) T(n, k) = {sum(i=1, n, binomial(1+i, 2)^k)} CROSSREFS Columns k=0..7 are A001477, A000292, A024166, A085438, A085439, A085440, A085441, A085442. Rows n=0..3 are A000004, A000012, A034472, A074508. Main diagonal is A249564(n > 0). Cf. A154283 (coefficients). Sequence in context: A124912 A138752 A342133 * A291656 A209063 A342321 Adjacent sequences:  A334778 A334779 A334780 * A334782 A334783 A334784 KEYWORD nonn,tabl AUTHOR Andrew Howroyd, May 15 2020 STATUS approved

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Last modified April 22 14:30 EDT 2021. Contains 343177 sequences. (Running on oeis4.)