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”).

A137225 as a simple table

na(n)
11
23
32
47
55
63
715
88
97
104
1131
1217
1311
149
155
1663
1726
1815
1914
2011
216
22127
2353
2431
2519
2617
2713
287
29255
3080
3147
3224
3323
3420
3515
368
37511
38161
3963
4049
4129
4227
4323
4417
459
461023
47242
48127
4974
5035
5134
5231
5326
5419
5510
562047
57485
58191
5999
6071
6141
6239
6335
6429
6521
6611
674095
68728
69255

[1,3,2,7,5,3,15,8,7,4,31,17,11,9,5,63,26,15,14,11,
 6,127,53,31,19,17,13,7,255,80,47,24,23,20,15,8,
 511,161,63,49,29,27,23,17,9,1023,242,127,74,35,34,
 31,26,19,10,2047,485,191,99,71,41,39,35,29,21,11,
 4095,728,255]