A061939 - 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

A061939 as a simple table

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	9
7	99
8	153
9	189
10	238
11	252
12	323
13	444
14	539
15	927
16	3099
17	3753
18	4224
19	5451
20	8967
21	44544
22	53673
23	97119
24	1423719
25	3860793
26	4773591

[1,2,3,5,6,9,99,153,189,238,252,323,444,539,927, 3099,3753,4224,5451,8967,44544,53673,97119, 1423719,3860793,4773591]