A323971 - cp's OEIS frontend

A323971 Number of 7 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{7,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

n	a(n)
0	1
1	15
2	155
3	1332
4	8342
5	41586
6	174844
7	642815
8	2117690
9	6362806
10	17671203
11	45844681
12	112047610
13	259796057
14	574776968
15	1219349012
16	2490738686
17	4916477305
18	9406990883
19	17494038498
20	31695618318
21	56063910644
22	96993880940
23	164397619093
24	273384891666
25	446635565576

[1, 15, 155, 1332, 8342, 41586, 174844, 642815, 2117690, 6362806, 17671203, 45844681, 112047610, 259796057, 574776968, 1219349012, 2490738686, 4916477305, 9406990883, 17494038498, 31695618318, 56063910644, 96993880940, 164397619093, 273384891666, 446635565576]

cp's OEIS Frontend

A323971 Number of 7 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{7,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

Table of values

List of values