A367400 - cp's OEIS frontend

A367400 Number of subsets of {1..n} whose cardinality is not the sum of two distinct elements.

n	a(n)
0	1
1	2
2	4
3	7
4	13
5	25
6	47
7	88
8	166
9	313
10	589
11	1109
12	2089
13	3934
14	7408
15	13951
16	26273
17	49477
18	93175
19	175468
20	330442
21	622289
22	1171897
23	2206921
24	4156081
25	7826746
26	14739356
27	27757207
28	52272469
29	98439697
30	185381983
31	349112000
32	657448942
33	1238110153

[1, 2, 4, 7, 13, 25, 47, 88, 166, 313, 589, 1109, 2089, 3934, 7408, 13951, 26273, 49477, 93175, 175468, 330442, 622289, 1171897, 2206921, 4156081, 7826746, 14739356, 27757207, 52272469, 98439697, 185381983, 349112000, 657448942, 1238110153]

cp's OEIS Frontend

A367400 Number of subsets of {1..n} whose cardinality is not the sum of two distinct elements.

Table of values

List of values