A151518 - 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

A151518 as a simple table

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	5
7	8
8	15
9	25
10	46
11	80
12	145
13	256
14	466
15	833
16	1513
17	2720
18	4925
19	8881
20	16063
21	28996
22	52373
23	94563
24	170620
25	307989
26	555214
27	1001774
28	1804594
29	3254229
30	5858448

[1,1,1,2,3,5,8,15,25,46,80,145,256,466,833,1513, 2720,4925,8881,16063,28996,52373,94563,170620, 307989,555214,1001774,1804594,3254229,5858448]