A241278 - cp's OEIS frontend

A241278 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	3
2	3
3	9
4	36
5	139
6	532
7	2111
8	8473
9	34053
10	136880
11	550213
12	2211810
13	8891567
14	35744766
15	143696235
16	577666729
17	2322248891
18	9335550407
19	37529342193
20	150869654682
21	606502776180
22	2438168211361
23	9801544653549
24	39402644818707
25	158400380771179

[3, 3, 9, 36, 139, 532, 2111, 8473, 34053, 136880, 550213, 2211810, 8891567, 35744766, 143696235, 577666729, 2322248891, 9335550407, 37529342193, 150869654682, 606502776180, 2438168211361, 9801544653549, 39402644818707, 158400380771179]

cp's OEIS Frontend

A241278 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values