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A148491 as a simple table

na(n)
01
11
22
36
421
579
6308
71230
85122
921917
1095429
11420388
121874468
138451916
1438469785
15176364014
16813412342
173772468146
1817586034802
1982346756679
20387060294933
211825485662648
228636347518082
2340975310094819
24194907689107949
25929256234842093
264439720262125077
2721253098983214205
28101922815438706386

[1,1,2,6,21,79,308,1230,5122,21917,95429,420388,
 1874468,8451916,38469785,176364014,813412342,
 3772468146,17586034802,82346756679,387060294933,
 1825485662648,8636347518082,40975310094819,
 194907689107949,929256234842093,4439720262125077,
 21253098983214205,101922815438706386]