A240187 - cp's OEIS frontend

A240187 Number of n X 2 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 three plus the sum of the elements diagonally to its northwest, modulo 4.

n	a(n)
1	1
2	5
3	12
4	27
5	73
6	154
7	358
8	872
9	1871
10	4438
11	10338
12	22880
13	54100
14	123711
15	279854
16	655190
17	1491102
18	3413413
19	7919449
20	18045604
21	41514375
22	95741087
23	218782546
24	503899032
25	1158409848
26	2653808377
27	6109601340
28	14027233372
29	32187863462

[1, 5, 12, 27, 73, 154, 358, 872, 1871, 4438, 10338, 22880, 54100, 123711, 279854, 655190, 1491102, 3413413, 7919449, 18045604, 41514375, 95741087, 218782546, 503899032, 1158409848, 2653808377, 6109601340, 14027233372, 32187863462]

cp's OEIS Frontend

A240187 Number of n X 2 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 three plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

List of values