A162036 - 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

A162036 as a simple table

n	a(n)
1	2
2	5
3	12
4	28
5	71
6	186
7	507
8	1443
9	4241
10	12895
11	40333
12	129679
13	427455
14	1442384
15	4975291
16	17518890
17	62907021
18	230104503
19	856679290
20	3243467627
21	12479244341
22	48759284806
23	193353224018
24	777721210211

[2,5,12,28,71,186,507,1443,4241,12895,40333, 129679,427455,1442384,4975291,17518890,62907021, 230104503,856679290,3243467627,12479244341, 48759284806,193353224018,777721210211]