A273968 - cp's OEIS frontend

A273968 T(n,k)=Number of nXk 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.

n	a(n)
1	1
2	2
3	2
4	5
5	10
6	5
7	15
8	105
9	105
10	15
11	51
12	1264
13	1946
14	1264
15	51
16	187
17	13045
18	24587
19	24587
20	13045
21	187
22	715
23	136063
24	211121
25	49534
26	211121
27	136063
28	715
29	2795
30	1273961
31	2116450
32	36817
33	36817
34	2116450
35	1273961
36	2795
37	11051
38	11936399
39	15084593
40	40569

[1, 2, 2, 5, 10, 5, 15, 105, 105, 15, 51, 1264, 1946, 1264, 51, 187, 13045, 24587, 24587, 13045, 187, 715, 136063, 211121, 49534, 211121, 136063, 715, 2795, 1273961, 2116450, 36817, 36817, 2116450, 1273961, 2795, 11051, 11936399, 15084593, 40569]

cp's OEIS Frontend

A273968 T(n,k)=Number of nXk 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.

Table of values

List of values