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A105309 as a simple table

na(n)
01
11
22
35
49
520
641
785
8178
9369
10769
111600
123329
136929
1414418
1530005
1662441
17129940
18270409
19562725
201171042
212436961
225071361
2310553600
2421962241
2545703841
2695110562
27197926885
28411889609
29857150100
301783745641
313712008565

[1,1,2,5,9,20,41,85,178,369,769,1600,3329,6929,
 14418,30005,62441,129940,270409,562725,1171042,
 2436961,5071361,10553600,21962241,45703841,
 95110562,197926885,411889609,857150100,1783745641,
 3712008565]