A121872 - cp's OEIS frontend

A121872 Triangle T(n, k) = (kChebyshevU(n, (k+2)/2) + 2ChebyshevT(n+1, (k+2)/2))/2.

n	a(n)
1	5
2	13
3	41
4	34
5	153
6	436
7	89
8	571
9	2089
10	5741
11	233
12	2131
13	10009
14	33461
15	90481
16	610
17	7953
18	47956
19	195025
20	620166
21	1663585
22	1597
23	29681
24	229771
25	1136689
26	4250681
27	13097377
28	34988311
29	4181
30	110771
31	1100899
32	6625109
33	29134601
34	103115431
35	310957991
36	828931049

[5, 13, 41, 34, 153, 436, 89, 571, 2089, 5741, 233, 2131, 10009, 33461, 90481, 610, 7953, 47956, 195025, 620166, 1663585, 1597, 29681, 229771, 1136689, 4250681, 13097377, 34988311, 4181, 110771, 1100899, 6625109, 29134601, 103115431, 310957991, 828931049]

cp's OEIS Frontend

A121872 Triangle T(n, k) = (kChebyshevU(n, (k+2)/2) + 2ChebyshevT(n+1, (k+2)/2))/2.

Table of values

List of values

cp's OEIS Frontend

A121872 Triangle T(n, k) = (k*ChebyshevU(n, (k+2)/2) + 2*ChebyshevT(n+1, (k+2)/2))/2.

Table of values

List of values

A121872 Triangle T(n, k) = (kChebyshevU(n, (k+2)/2) + 2ChebyshevT(n+1, (k+2)/2))/2.