A217492 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A217492 as a simple table

n	a(n)
1	0
2	1
3	3
4	4
5	9
6	18
7	49
8	57
9	67
10	69
11	106
12	126
13	258
14	583
15	1221
16	1366
17	4311
18	11361
19	12621
20	14964
21	16017
22	22467
23	25434
24	45094
25	51051
26	89113

[0,1,3,4,9,18,49,57,67,69,106,126,258,583,1221, 1366,4311,11361,12621,14964,16017,22467,25434, 45094,51051,89113]

[0,1,3,4,9,18,49,57,67,69,106,126,258,583,1221,
 1366,4311,11361,12621,14964,16017,22467,25434,
 45094,51051,89113]