A306322 - cp's OEIS frontend

A306322 Number of n X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{n,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

n	a(n)
0	1
1	0
2	0
3	25
4	386
5	4657
6	54219
7	642815
8	7852836
9	98755951
10	1273299491
11	16761968919
12	224508932229
13	3051075581019
14	41979207169125
15	583745779595077
16	8192478969914858
17	115908383594664493
18	1651636256584103013
19	23685002515500875105
20	341589590792856093329

[1, 0, 0, 25, 386, 4657, 54219, 642815, 7852836, 98755951, 1273299491, 16761968919, 224508932229, 3051075581019, 41979207169125, 583745779595077, 8192478969914858, 115908383594664493, 1651636256584103013, 23685002515500875105, 341589590792856093329]

cp's OEIS Frontend

A306322 Number of n X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{n,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

Table of values

List of values