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A297197 as a simple table

na(n)
01
12
24
310
434
5146
6752
74520
831062
9240188
102063846
1119508770
12201184666
132247704104
1427044622168
15348654862510
164794539357488
1770054014476102
181083796147054274
1917698938549553490
20304247125951777284

[1,2,4,10,34,146,752,4520,31062,240188,2063846,
 19508770,201184666,2247704104,27044622168,
 348654862510,4794539357488,70054014476102,
 1083796147054274,17698938549553490,
 304247125951777284]