A275331 - cp's OEIS frontend

A275331 Triangle read by rows, T(n,k) = kSum_{m=1..n/k} t(k)t(n-k*m+1) with t = A000081, for n>=1 and 1<=k<=n.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	8
8	6
9	6
10	16
11	17
12	10
13	12
14	16
15	45
16	37
17	24
18	30
19	32
20	45
21	120
22	85
23	50
24	60
25	64
26	90
27	120
28	336
29	200
30	120
31	132
32	160
33	180
34	240
35	336
36	920
37	486
38	280
39	318
40	336
41	405
42	480
43	672
44	920
45	2574
46	1205
47	692
48	750
49	800
50	945
51	1080
52	1344
53	1840
54	2574
55	7190

[1, 2, 2, 4, 2, 6, 8, 6, 6, 16, 17, 10, 12, 16, 45, 37, 24, 30, 32, 45, 120, 85, 50, 60, 64, 90, 120, 336, 200, 120, 132, 160, 180, 240, 336, 920, 486, 280, 318, 336, 405, 480, 672, 920, 2574, 1205, 692, 750, 800, 945, 1080, 1344, 1840, 2574, 7190]

cp's OEIS Frontend

A275331 Triangle read by rows, T(n,k) = kSum_{m=1..n/k} t(k)t(n-k*m+1) with t = A000081, for n>=1 and 1<=k<=n.

Table of values

List of values

cp's OEIS Frontend

A275331 Triangle read by rows, T(n,k) = k*Sum_{m=1..n/k} t(k)*t(n-k*m+1) with t = A000081, for n>=1 and 1<=k<=n.

Table of values

List of values

A275331 Triangle read by rows, T(n,k) = kSum_{m=1..n/k} t(k)t(n-k*m+1) with t = A000081, for n>=1 and 1<=k<=n.