A127108 Triangle read by rows, A127099 * A000012.

1, 5, 2, 7, 3, 3, 17, 10, 4, 4, 11, 5, 5, 5, 5, 35, 23, 15, 6, 6, 6, 15, 7, 7, 7, 7, 7, 7, 49, 34, 20, 20, 8, 8, 8, 8, 34, 21, 21, 9, 9, 9, 9, 9, 9, 55, 37, 25, 25, 25, 10, 10, 10, 10, 10, 23, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 119, 91, 67, 46, 30, 30, 12, 12, 12, 12, 12, 12

Offset

0,2

Comments

The operation A000012 * A127099 generates n-th row of the triangle by taking partial sums of n-th row of triangle A127099. Row 4 of A127099 (7, 6, 0, 4) becomes row 4 of A127108: (17, 10, 4, 4).

Row sums = A001001: (1, 7, 13, 35, 31, 91, ...).

Left column of the triangle = A060640: (1, 5, 7, 17, 11, 35, ...).

Links

Table of n, a(n) for n=0..77.

Formula

Triangle read by rows, A127099 * A000012.

Example

First few rows of the triangle:
   1;
   5,  2;
   7,  3,  3;
  17, 10,  4,  4;
  11,  5,  5,  5,  5;
  35, 23, 15,  6,  6,  6;
  15,  7,  7,  7,  7,  7,  7;
  49, 34, 20, 20,  8,  8,  8,  8;
  34, 21, 21,  9,  9,  9,  9,  9,  9;
  55, 37, 25, 25, 25, 10, 10, 10, 10, 10;
  ...

Crossrefs

Cf. A060640, A001001, A126988, A127093, A000203, A127094, A123229, A127096, A127098, A127099.

Sequence in context: A348432 A183167 A115321 * A196405 A352406 A093606

Adjacent sequences: A127105 A127106 A127107 * A127109 A127110 A127111

Keyword

nonn,tabl

Author

Gary W. Adamson, Jan 05 2007, Jul 27 2008

Extensions

Edited by N. J. A. Sloane, Aug 13 2008 at the suggestion of R. J. Mathar

Status

approved