A066793 - 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

A066793 as a simple table

n	a(n)
1	1
2	9
3	14
4	33
5	54
6	140
7	213
8	1934
9	35811
10	38405
11	200938
12	389409
13	1792209
14	5606457
15	8405437
16	68780189
17	880346227
18	85910903650
19	87635944146
20	284340107954
21	2195312273836
22	2864568747364
23	3155591650029

[1,9,14,33,54,140,213,1934,35811,38405,200938, 389409,1792209,5606457,8405437,68780189,880346227, 85910903650,87635944146,284340107954, 2195312273836,2864568747364,3155591650029]