A222908 - cp's OEIS frontend

A222908 Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	5
2	14
3	45
4	373
5	1202
6	18981
7	82020
8	1506810
9	6857704
10	129852811
11	597088326
12	11405469595
13	52673539459
14	1011491590878
15	4687412959525
16	90358383040770
17	419948850379586
18	8119819516703235
19	37831903319054460
20	733292643562816976

[5, 14, 45, 373, 1202, 18981, 82020, 1506810, 6857704, 129852811, 597088326, 11405469595, 52673539459, 1011491590878, 4687412959525, 90358383040770, 419948850379586, 8119819516703235, 37831903319054460, 733292643562816976]

cp's OEIS Frontend

A222908 Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values