A210374 - cp's OEIS frontend

A210374 Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n+2.

n	a(n)
0	0
1	4
2	19
3	40
4	68
5	104
6	149
7	204
8	270
9	348
10	439
11	544
12	664
13	800
14	953
15	1124
16	1314
17	1524
18	1755
19	2008
20	2284
21	2584
22	2909
23	3260
24	3638
25	4044
26	4479
27	4944
28	5440
29	5968
30	6529
31	7124
32	7754
33	8420
34	9123
35	9864
36	10644
37	11464
38	12325
39	13228
40	14174
41	15164

[0, 4, 19, 40, 68, 104, 149, 204, 270, 348, 439, 544, 664, 800, 953, 1124, 1314, 1524, 1755, 2008, 2284, 2584, 2909, 3260, 3638, 4044, 4479, 4944, 5440, 5968, 6529, 7124, 7754, 8420, 9123, 9864, 10644, 11464, 12325, 13228, 14174, 15164]

cp's OEIS Frontend

A210374 Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n+2.

Table of values

List of values