A223056 - cp's OEIS frontend

A223056 Number of n X 2 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.

n	a(n)
1	2
2	10
3	114
4	1473
5	19360
6	255045
7	3361024
8	44294253
9	583749160
10	7693175205
11	101387647984
12	1336178514333
13	17609374162360
14	232072328089365
15	3058459941439744
16	40307163247443213
17	531204410117077960

[2, 10, 114, 1473, 19360, 255045, 3361024, 44294253, 583749160, 7693175205, 101387647984, 1336178514333, 17609374162360, 232072328089365, 3058459941439744, 40307163247443213, 531204410117077960]

cp's OEIS Frontend

A223056 Number of n X 2 0..3 arrays with all horizontally or vertically connected equal values in a straight line, and new values 0..3 introduced in row major order.

Table of values

List of values