A367216 - cp's OEIS frontend

A367216 Number of subsets of {1..n} whose cardinality is equal to the sum of some subset.

n	a(n)
0	1
1	2
2	3
3	5
4	10
5	20
6	40
7	82
8	169
9	348
10	716
11	1471
12	3016
13	6171
14	12605
15	25710
16	52370
17	106539
18	216470
19	439310
20	890550
21	1803415
22	3648557
23	7375141
24	14896184
25	30065129
26	60639954
27	122231740
28	246239551
29	495790161
30	997747182
31	2006969629
32	4035274292
33	8110185100
34	16293958314
35	32724456982

[1, 2, 3, 5, 10, 20, 40, 82, 169, 348, 716, 1471, 3016, 6171, 12605, 25710, 52370, 106539, 216470, 439310, 890550, 1803415, 3648557, 7375141, 14896184, 30065129, 60639954, 122231740, 246239551, 495790161, 997747182, 2006969629, 4035274292, 8110185100, 16293958314, 32724456982]

cp's OEIS Frontend

A367216 Number of subsets of {1..n} whose cardinality is equal to the sum of some subset.

Table of values

List of values