login

A135261 as a simple table

na(n)
0-1
13
2-1
32
4-1
55
66
717
827
958
10111
11229
12454
13913
141819
153642
167279
1714565
1829126
1958257
20116507
21233018
22466031
23932069
241864134
253728273
267456539
2714913082
2829826159
2959652325
30119304646
31238609297
32477218587
33954437178
341908874351
353817748709
367635497414

[-1,3,-1,2,-1,5,6,17,27,58,111,229,454,913,1819,
 3642,7279,14565,29126,58257,116507,233018,466031,
 932069,1864134,3728273,7456539,14913082,29826159,
 59652325,119304646,238609297,477218587,954437178,
 1908874351,3817748709,7635497414]