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A258313 as a simple table

na(n)
01
13
215
393
4641
54719
636335
7289017
82356321
919586283
10165364799
111414193205
1212224831937
13106645825047
14937685498271
158301129707121
1673929906605249
17661919872559763
185954449287679919
1953791836313371405
20487807821246726273
214438980860105747967
2240521481906592540175

[1,3,15,93,641,4719,36335,289017,2356321,19586283,
 165364799,1414193205,12224831937,106645825047,
 937685498271,8301129707121,73929906605249,
 661919872559763,5954449287679919,
 53791836313371405,487807821246726273,
 4438980860105747967,40521481906592540175]