login

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”).

A164662 as a simple table

na(n)
01
11
21
3-2
41
58
6-11
7-41
8-127
9107
10-639
11-1372
12-3695
13514
14-25983
15-26339
16-70655
17-46299
18-430955
19-484134
20-2808479
2193148
22-5032895
23-17319181
24-72165695
2543371103
26-171203135
27-378398576
28-148383647
29-2605023034
30-3368133419
3111479942073
32-11902375935
332021161097
34-708801692671

[1,1,1,-2,1,8,-11,-41,-127,107,-639,-1372,-3695,
 514,-25983,-26339,-70655,-46299,-430955,-484134,
 -2808479,93148,-5032895,-17319181,-72165695,
 43371103,-171203135,-378398576,-148383647,
 -2605023034,-3368133419,11479942073,-11902375935,
 2021161097,-708801692671]