A093905 - cp's OEIS frontend

A093905 Triangle read by rows: for 0 <= k < n, a(n, k) is the sum of the products of all subsets of {n-k, n-k+1, ..., n} with k members.

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	11
7	1
8	7
9	26
10	50
11	1
12	9
13	47
14	154
15	274
16	1
17	11
18	74
19	342
20	1044
21	1764
22	1
23	13
24	107
25	638
26	2754
27	8028
28	13068
29	1
30	15
31	146
32	1066
33	5944
34	24552
35	69264
36	109584
37	1
38	17
39	191
40	1650
41	11274
42	60216
43	241128
44	663696
45	1026576
46	1
47	19
48	242
49	2414
50	19524
51	127860

[1, 1, 3, 1, 5, 11, 1, 7, 26, 50, 1, 9, 47, 154, 274, 1, 11, 74, 342, 1044, 1764, 1, 13, 107, 638, 2754, 8028, 13068, 1, 15, 146, 1066, 5944, 24552, 69264, 109584, 1, 17, 191, 1650, 11274, 60216, 241128, 663696, 1026576, 1, 19, 242, 2414, 19524, 127860]

cp's OEIS Frontend

A093905 Triangle read by rows: for 0 <= k < n, a(n, k) is the sum of the products of all subsets of {n-k, n-k+1, ..., n} with k members.

Table of values

List of values