The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A125026 Triangle read by rows: T(n,k) = k*binomial(n,k) + binomial(n-1,k) (1 <= k <= n). 3
 1, 3, 2, 5, 7, 3, 7, 15, 13, 4, 9, 26, 34, 21, 5, 11, 40, 70, 65, 31, 6, 13, 57, 125, 155, 111, 43, 7, 15, 77, 203, 315, 301, 175, 57, 8, 17, 100, 308, 574, 686, 532, 260, 73, 9, 19, 126, 444, 966, 1386, 1344, 876, 369, 91, 10, 21, 155, 615, 1530, 2562, 2982, 2430, 1365 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also A007318 * A127899 (unsigned) as a product of two infinite lower triangular matrices. - Gary W. Adamson, Feb 19 2007 LINKS EXAMPLE First few rows of the triangle are    1;    3,   2;    5,   7,   3;    7,  15,  13,   4;    9,  26,  34,  21,   5;   11,  40,  70,  65,  31,   6;   13,  57, 125, 155, 111,  43,  7;   ... MAPLE T:=(n, k)->k*binomial(n, k)+binomial(n-1, k): for n from 1 to 12 do seq(T(n, k), k=1..n) od; # yields sequence in triangular form CROSSREFS Cf. A099035 (row sums). Sequence in context: A181883 A021311 A128224 * A130295 A208613 A209584 Adjacent sequences:  A125023 A125024 A125025 * A125027 A125028 A125029 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Nov 15 2006 EXTENSIONS Edited by N. J. A. Sloane, Nov 29 2006 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 September 25 09:40 EDT 2021. Contains 347654 sequences. (Running on oeis4.)