A128496 - cp's OEIS frontend

A128496 Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).

n	a(n)
0	1
1	2
2	4
3	9
4	20
5	50
6	125
7	324
8	840
9	2195
10	5736
11	15012
12	39289
13	102854
14	269260
15	704925
16	1845500
17	4831574
18	12649205
19	33116040
20	86698896
21	226980647
22	594243024
23	1555748424
24	4073002225
25	10663258250
26	27916772500
27	73087059249
28	191344405220

[1, 2, 4, 9, 20, 50, 125, 324, 840, 2195, 5736, 15012, 39289, 102854, 269260, 704925, 1845500, 4831574, 12649205, 33116040, 86698896, 226980647, 594243024, 1555748424, 4073002225, 10663258250, 27916772500, 73087059249, 191344405220]

cp's OEIS Frontend

A128496 Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).

Table of values

List of values