A349816 Irregular triangle read by rows: the right-hand side of the triangle in A349815.

1, 1, 1, 1, 2, 1, 2, 4, 4, 3, 1, 8, 13, 12, 8, 4, 1, 13, 33, 41, 37, 25, 13, 5, 1, 74, 124, 136, 116, 80, 44, 19, 6, 1, 124, 334, 450, 456, 376, 259, 149, 70, 26, 7, 1, 784, 1364, 1616, 1541, 1240, 854, 504, 252, 104, 34, 8, 1, 1364, 3764, 5305, 5761, 5251, 4139, 2850, 1714, 894, 398, 147, 43, 9, 1, 9069, 16194, 20081, 20456, 18001, 13954, 9597, 5856, 3153, 1482, 597, 200, 53, 10, 1

Offset

0,5

Comments

It seems more symmetrical to omit the central column of zeros in A349815.

Links

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

Example

Triangle begins:
    1;
    1,    1;
    1,    2,    1;
    2,    4,    4,    3,    1;
    8,   13,   12,    8,    4,   1;
   13,   33,   41,   37,   25,  13,   5,   1;
   74,  124,  136,  116,   80,  44,  19,   6,   1;
  124,  334,  450,  456,  376, 259, 149,  70,  26,  7, 1;
  784, 1364, 1616, 1541, 1240, 854, 504, 252, 104, 34, 8, 1;
  ...

Crossrefs

Cf. A348815, A349818.

Sequence in context: A275122 A264569 A265601 * A105970 A133950 A241512

Adjacent sequences: A349813 A349814 A349815 * A349817 A349818 A349819

Keyword

nonn,tabf

Author

N. J. A. Sloane, Dec 23 2021

Status

approved