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”).

A202636 as a simple table

na(n)
14
212
312
436
5184
636
7108
82428
92428
10108
11324
1232676
13143028
1432676
15324
16972
17443100
188196796
198196796
20443100
21972
222916
235967248
24464590190
251960824272
26464590190
275967248
282916
298748
3080018540
3126143599304
32459796683544

[4,12,12,36,184,36,108,2428,2428,108,324,32676,
 143028,32676,324,972,443100,8196796,8196796,
 443100,972,2916,5967248,464590190,1960824272,
 464590190,5967248,2916,8748,80018540,26143599304,
 459796683544]