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A370306 as a simple table

na(n)
01
12
27
324
470
5198
6532
71370
83418
98296
1019677
1145770
12104687
13235972
14525136
151155516
162517199
175434454
1811638099
1924741812
2052250956
21109678746
22228948036
23475479494
24982831024
252022696684
264145947065
278466032502
2817226979885
2934939008232
3070643799296
31142423352600

[1,2,7,24,70,198,532,1370,3418,8296,19677,45770,
 104687,235972,525136,1155516,2517199,5434454,
 11638099,24741812,52250956,109678746,228948036,
 475479494,982831024,2022696684,4145947065,
 8466032502,17226979885,34939008232,70643799296,
 142423352600]