A102716 - cp's OEIS frontend

A102716 Triangle read by rows: T(n,k) = sigma(binomial(n,k)) (0 <= k <= n), where sigma(m) is the sum of the positive divisors of m.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	7
12	12
13	7
14	1
15	1
16	6
17	18
18	18
19	6
20	1
21	1
22	12
23	24
24	42
25	24
26	12
27	1
28	1
29	8
30	32
31	48
32	48
33	32
34	8
35	1
36	1
37	15
38	56
39	120
40	144
41	120
42	56
43	15
44	1
45	1
46	13
47	91
48	224
49	312
50	312
51	224
52	91
53	13
54	1
55	1
56	18
57	78
58	360
59	576
60	728
61	576
62	360
63	78
64	18
65	1
66	1
67	12
68	72
69	288
70	864
71	1152
72	1152
73	864

[1, 1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 7, 12, 7, 1, 1, 6, 18, 18, 6, 1, 1, 12, 24, 42, 24, 12, 1, 1, 8, 32, 48, 48, 32, 8, 1, 1, 15, 56, 120, 144, 120, 56, 15, 1, 1, 13, 91, 224, 312, 312, 224, 91, 13, 1, 1, 18, 78, 360, 576, 728, 576, 360, 78, 18, 1, 1, 12, 72, 288, 864, 1152, 1152, 864]

cp's OEIS Frontend

A102716 Triangle read by rows: T(n,k) = sigma(binomial(n,k)) (0 <= k <= n), where sigma(m) is the sum of the positive divisors of m.

Table of values

List of values