A240148 - cp's OEIS frontend

A240148 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of 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	11
4	25
5	62
6	144
7	329
8	775
9	1781
10	4150
11	9625
12	22243
13	51656
14	119768
15	277454
16	643440
17	1492066
18	3458520
19	8019402
20	18594916
21	43110992
22	99960080
23	231775985
24	537393625
25	1246028348
26	2889126804
27	6698837457
28	15532273640
29	36014074118

[3, 5, 11, 25, 62, 144, 329, 775, 1781, 4150, 9625, 22243, 51656, 119768, 277454, 643440, 1492066, 3458520, 8019402, 18594916, 43110992, 99960080, 231775985, 537393625, 1246028348, 2889126804, 6698837457, 15532273640, 36014074118]

cp's OEIS Frontend

A240148 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of 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