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A148440 as a simple table

na(n)
01
11
22
36
416
545
6154
7499
81634
95888
1020672
1173593
12274009
131005519
143759072
1514335509
1654252692
17208982781
18811404178
193144286752
2012352600466
2148645794723
22191989283484
23764771646799
243048041384831
2512199723310941
2649103289442878
27197753021277819
28800089083193025
293247148044051183

[1,1,2,6,16,45,154,499,1634,5888,20672,73593,
 274009,1005519,3759072,14335509,54252692,
 208982781,811404178,3144286752,12352600466,
 48645794723,191989283484,764771646799,
 3048041384831,12199723310941,49103289442878,
 197753021277819,800089083193025,3247148044051183]