A110579 - 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

A110579 as a simple table

n	a(n)
0	1
1	4
2	11
3	29
4	87
5	317
6	1367
7	6644
8	35257
9	201152
10	1224225
11	7906794
12	53961576
13	387673853
14	2921972174
15	23036161619
16	189459483913
17	1621711095618
18	14416893342727
19	132860397599808
20	1267097654903284

[1,4,11,29,87,317,1367,6644,35257,201152,1224225, 7906794,53961576,387673853,2921972174,23036161619, 189459483913,1621711095618,14416893342727, 132860397599808,1267097654903284]