A241392 - cp's OEIS frontend

A241392 Number of nX2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or zero 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	2
2	5
3	13
4	28
5	64
6	142
7	318
8	726
9	1634
10	3695
11	8363
12	18904
13	42787
14	96771
15	218940
16	495514
17	1121224
18	2537388
19	5742666
20	12996786
21	29415660
22	66576728
23	150686121
24	341060866
25	771951453
26	1747237409
27	3954724092
28	8951198975
29	20260385570
30	45857968649

[2, 5, 13, 28, 64, 142, 318, 726, 1634, 3695, 8363, 18904, 42787, 96771, 218940, 495514, 1121224, 2537388, 5742666, 12996786, 29415660, 66576728, 150686121, 341060866, 771951453, 1747237409, 3954724092, 8951198975, 20260385570, 45857968649]

cp's OEIS Frontend

A241392 Number of nX2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or zero 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