A349780 Triangle read by rows, T(n, k) = A000262(n) - A349776(n, n - k) for n > 0 and T(0, 0) = 1.

1, 0, 1, 0, 1, 3, 0, 1, 7, 13, 0, 1, 13, 49, 73, 0, 1, 21, 141, 381, 501, 0, 1, 31, 331, 1531, 3331, 4051, 0, 1, 43, 673, 4873, 17473, 32593, 37633, 0, 1, 57, 1233, 12993, 71793, 212913, 354033, 394353, 0, 1, 73, 2089, 30313, 241993, 1088713, 2782153, 4233673, 4596553

Offset

0,6

Links

Table of n, a(n) for n=0..54.

Example

[0] 1;
[1] 0, 1;
[2] 0, 1,  3;
[3] 0, 1,  7,   13;
[4] 0, 1, 13,   49,    73;
[5] 0, 1, 21,  141,   381,    501;
[6] 0, 1, 31,  331,  1531,   3331,    4051;
[7] 0, 1, 43,  673,  4873,  17473,   32593,   37633;
[8] 0, 1, 57, 1233, 12993,  71793,  212913,  354033, 394353;
[9] 0, 1, 73, 2089, 30313, 241993, 1088713, 2782153, 4233673, 4596553.

Crossrefs

Row sums are A052852 for n >= 1.

Cf. A000262, A349776.

Sequence in context: A199606 A182472 A285867 * A261764 A216806 A290776

Adjacent sequences: A349777 A349778 A349779 * A349781 A349782 A349783

Keyword

nonn,tabl

Author

Peter Luschny, Nov 30 2021

Status

approved