A240154 - cp's OEIS frontend

A240154 Number of 2Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	3
2	5
3	8
4	19
5	36
6	57
7	120
8	218
9	377
10	758
11	1366
12	2451
13	4815
14	8678
15	15839
16	30594
17	55356
18	102004
19	194522
20	353711
21	655297
22	1238182
23	2261878
24	4202427
25	7889648
26	14469040
27	26917836
28	50315864
29	92567160
30	172279431
31	321102231
32	592194036
33	1102055156

[3, 5, 8, 19, 36, 57, 120, 218, 377, 758, 1366, 2451, 4815, 8678, 15839, 30594, 55356, 102004, 194522, 353711, 655297, 1238182, 2261878, 4202427, 7889648, 14469040, 26917836, 50315864, 92567160, 172279431, 321102231, 592194036, 1102055156]

cp's OEIS Frontend

A240154 Number of 2Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values