This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A095675 Triangle read by rows, formed from product of Aitken's (or Bell's) triangle (A011971) and Pascal's triangle (A007318). 2
 1, 3, 2, 10, 13, 5, 37, 72, 55, 15, 151, 393, 450, 245, 52, 674, 2202, 3365, 2748, 1166, 203, 3263, 12850, 24582, 26781, 17048, 5936, 877, 17007, 78488, 180477, 245971, 208856, 109107, 32243, 4140, 94828, 502327, 1349900, 2209695, 2346559, 1634998 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS These triangles are to be thought of as infinite lower-triangular matrices. LINKS EXAMPLE Triangle begins: 1 3 2 10 13 5 37 72 55 15 151 393 450 245 52 MATHEMATICA a[0, 0] = 1; a[n_, 0] := a[n - 1, n - 1]; a[n_, k_] := a[n, k] = If[k < n + 1, a[n, k - 1] + a[n - 1, k - 1], 0]; p[n_, r_] := If[r <= n + 1, Binomial[n, r], 0]; am = Table[ a[n, r], {n, 0, 9}, {r, 0, 9}]; pm = Table[p[n, r], {n, 0, 9}, {r, 0, 9}]; t = Flatten[am.pm]; Delete[ t, Position[t, 0]] (* Robert G. Wilson v, Jul 12 2004 *) CROSSREFS Cf. A007318, A011971, A095674. Row sums give A095676. First column is A005493. Sequence in context: A019242 A064367 A113980 * A226442 A300374 A256063 Adjacent sequences:  A095672 A095673 A095674 * A095676 A095677 A095678 KEYWORD nonn,tabl,easy AUTHOR N. J. A. Sloane, based on a suggestion from Gary W. Adamson, Jun 22 2004 EXTENSIONS More terms from Robert G. Wilson v, Jul 13 2004 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 21 04:56 EDT 2019. Contains 322310 sequences. (Running on oeis4.)