A240279 - cp's OEIS frontend

A240279 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.

n	a(n)
1	2
2	8
3	19
4	38
5	114
6	251
7	612
8	1656
9	3758
10	9630
11	24258
12	57548
13	146898
14	360946
15	880960
16	2217967
17	5429271
18	13419200
19	33424298
20	82079277
21	203571196
22	504206276
23	1242741927
24	3081338174
25	7616293969
26	18815746878
27	46600839533
28	115150972966

[2, 8, 19, 38, 114, 251, 612, 1656, 3758, 9630, 24258, 57548, 146898, 360946, 880960, 2217967, 5429271, 13419200, 33424298, 82079277, 203571196, 504206276, 1242741927, 3081338174, 7616293969, 18815746878, 46600839533, 115150972966]

cp's OEIS Frontend

A240279 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

List of values