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”).

A171663 as a simple table

na(n)
01
15
25
313
425
541
6113
7145
8481
9545
101985
112113
128065
138321
1432513
1533025
16130561
17131585
18523265
19525313
202095105
212099201
228384513
238392705
2433546241
2533562625
26134201345
27134234113
28536838145
29536903681
302147418113
312147549185

[1,5,5,13,25,41,113,145,481,545,1985,2113,8065,
 8321,32513,33025,130561,131585,523265,525313,
 2095105,2099201,8384513,8392705,33546241,33562625,
 134201345,134234113,536838145,536903681,
 2147418113,2147549185]