login

A147397 as a simple table

na(n)
11
21
31
45
517
645
7217
81729
928581
10422837
117769557
12212491441
139353130173
14579241228119

[1,1,1,5,17,45,217,1729,28581,422837,7769557,
 212491441,9353130173,579241228119]