A214907 - cp's OEIS frontend

A214907 Number of 3 X 3 X 3 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.

n	a(n)
1	2
2	6
3	14
4	29
5	50
6	88
7	136
8	209
9	302
10	430
11	584
12	793
13	1034
14	1344
15	1704
16	2149
17	2652
18	3270
19	3956
20	4777
21	5690
22	6760
23	7934
24	9305
25	10792
26	12502
27	14360
28	16469
29	18740
30	21312
31	24062
32	27145
33	30444
34	34110
35	38010
36	42337
37	46916
38	51960
39	57302
40	63149
41	69314
42	76054
43	83134

[2, 6, 14, 29, 50, 88, 136, 209, 302, 430, 584, 793, 1034, 1344, 1704, 2149, 2652, 3270, 3956, 4777, 5690, 6760, 7934, 9305, 10792, 12502, 14360, 16469, 18740, 21312, 24062, 27145, 30444, 34110, 38010, 42337, 46916, 51960, 57302, 63149, 69314, 76054, 83134]

cp's OEIS Frontend

A214907 Number of 3 X 3 X 3 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.

Table of values

List of values