A272352 - cp's OEIS frontend

A272352 a(n) is the number of ways of putting n labeled balls into 2 indistinguishable boxes such that each box contains at least 3 balls.

n	a(n)
6	10
7	35
8	91
9	210
10	456
11	957
12	1969
13	4004
14	8086
15	16263
16	32631
17	65382
18	130900
19	261953
20	524077
21	1048344
22	2096898
23	4194027
24	8388307
25	16776890
26	33554080
27	67108485
28	134217321
29	268435020
30	536870446
31	1073741327
32	2147483119
33	4294966734
34	8589933996
35	17179868553

[10, 35, 91, 210, 456, 957, 1969, 4004, 8086, 16263, 32631, 65382, 130900, 261953, 524077, 1048344, 2096898, 4194027, 8388307, 16776890, 33554080, 67108485, 134217321, 268435020, 536870446, 1073741327, 2147483119, 4294966734, 8589933996, 17179868553]

cp's OEIS Frontend

A272352 a(n) is the number of ways of putting n labeled balls into 2 indistinguishable boxes such that each box contains at least 3 balls.

Table of values

List of values