A222841 - cp's OEIS frontend

A222841 Number of n X 4 0..3 arrays with no more than floor(n X 4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	11
2	1585
3	326408
4	70144361
5	15371324917
6	3410802057085
7	763478480305913
8	172013012570239087
9	38951066890039501260
10	8855947103673731502351
11	2020193746874015711217978
12	462122926444094400382307495

[11, 1585, 326408, 70144361, 15371324917, 3410802057085, 763478480305913, 172013012570239087, 38951066890039501260, 8855947103673731502351, 2020193746874015711217978, 462122926444094400382307495]

cp's OEIS Frontend

A222841 Number of n X 4 0..3 arrays with no more than floor(n X 4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values