A323973 - cp's OEIS frontend

A323973 Number of 9 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{9,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

n	a(n)
0	1
1	28
2	406
3	4631
4	38304
5	249814
6	1357051
7	6362806
8	26400811
9	98755951
10	337852708
11	1069253171
12	3159851197
13	8786784471
14	23140533785
15	58032604728
16	139238130793
17	320911139366
18	712976624945
19	1531659348507
20	3190199728577
21	6457722870812
22	12731177730290
23	24491108899982

[1, 28, 406, 4631, 38304, 249814, 1357051, 6362806, 26400811, 98755951, 337852708, 1069253171, 3159851197, 8786784471, 23140533785, 58032604728, 139238130793, 320911139366, 712976624945, 1531659348507, 3190199728577, 6457722870812, 12731177730290, 24491108899982]

cp's OEIS Frontend

A323973 Number of 9 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{9,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

Table of values

List of values