A323967 - cp's OEIS frontend

A323967 Number of 3 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{3,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

n	a(n)
0	1
1	1
2	4
3	25
4	94
5	266
6	632
7	1332
8	2570
9	4631
10	7900
11	12883
12	20230
13	30760
14	45488
15	65654
16	92754
17	128573
18	175220
19	235165
20	311278
21	406870
22	525736
23	672200
24	851162
25	1068147
26	1329356
27	1641719
28	2012950
29	2451604
30	2967136
31	3569962
32	4271522
33	5084345
34	6022116
35	7099745

[1, 1, 4, 25, 94, 266, 632, 1332, 2570, 4631, 7900, 12883, 20230, 30760, 45488, 65654, 92754, 128573, 175220, 235165, 311278, 406870, 525736, 672200, 851162, 1068147, 1329356, 1641719, 2012950, 2451604, 2967136, 3569962, 4271522, 5084345, 6022116, 7099745]

cp's OEIS Frontend

A323967 Number of 3 X n integer matrices (m_{i,j}) such that m_{1,1}=0, m_{3,n}=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2.

Table of values

List of values