A349814 Irregular triangle read by rows: the right-hand side of the triangle in A349813.

3, 1, 3, 3, 4, 3, 4, 10, 10, 7, 3, 20, 31, 30, 20, 10, 3, 31, 81, 101, 91, 63, 33, 13, 3, 182, 304, 336, 288, 200, 112, 49, 16, 3, 304, 822, 1110, 1128, 936, 649, 377, 180, 68, 19, 3, 1932, 3364, 3996, 3823, 3090, 2142, 1274, 644, 270, 90, 22, 3, 3364, 9292, 13115, 14273, 13051, 10329, 7150, 4330, 2278, 1026, 385, 115, 25, 3, 22407, 40044, 49731, 50768, 44803, 34860, 24087, 14784, 8019, 3804, 1551, 528, 143, 28, 3

Offset

0,1

Comments

It seems more symmetrical to omit the central column of zeros in A349813.

Links

Table of n, a(n) for n=0..85.

Example

Triangle begins:
     3;
     1,    3;
     3,    4,    3;
     4,   10,   10,    7,    3;
    20,   31,   30,   20,   10,    3;
    31,   81,  101,   91,   63,   33,   13,   3;
   182,  304,  336,  288,  200,  112,   49,  16,   3;
   304,  822, 1110, 1128,  936,  649,  377, 180,  68, 19,  3;
  1932, 3364, 3996, 3823, 3090, 2142, 1274, 644, 270, 90, 22, 3;
  ...

Crossrefs

Cf. A348813, A349819.

Sequence in context: A049996 A344793 A143908 * A117572 A029153 A060241

Adjacent sequences: A349811 A349812 A349813 * A349815 A349816 A349817

Keyword

nonn,tabf

Author

N. J. A. Sloane, Dec 23 2021

Status

approved