A357290 - cp's OEIS frontend

A357290 a(n) = number of subsets S of {1,2,...,n} having more than 2 elements such that (sum of least two elements of S) > difference between greatest two elements of S.

n	a(n)
0	0
1	0
2	0
3	1
4	5
5	15
6	39
7	91
8	200
9	424
10	879
11	1796
12	3639
13	7334
14	14734
15	29545
16	59179
17	118459
18	237033
19	474195
20	948534
21	1897228
22	3794633
23	7589460
24	15179133
25	30358498
26	60717248
27	121434769
28	242869833
29	485739983
30	971480307
31	1942960979
32	3885922348
33	7771845112

[0, 0, 0, 1, 5, 15, 39, 91, 200, 424, 879, 1796, 3639, 7334, 14734, 29545, 59179, 118459, 237033, 474195, 948534, 1897228, 3794633, 7589460, 15179133, 30358498, 60717248, 121434769, 242869833, 485739983, 971480307, 1942960979, 3885922348, 7771845112]

cp's OEIS Frontend

A357290 a(n) = number of subsets S of {1,2,...,n} having more than 2 elements such that (sum of least two elements of S) > difference between greatest two elements of S.

Table of values

List of values