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A373960 as a simple table

na(n)
11
23
312
455
5251
61133
75103
822990
9103598
10466852
112103796
129480387
1342721676
14192517665
15867546829
163909446467
1717617229520
1879388930909
19357752184782
201612146986543
217264855441424
2232737786954481
23147527050375071
24664804576516400
252995824317191471

[1,3,12,55,251,1133,5103,22990,103598,466852,
 2103796,9480387,42721676,192517665,867546829,
 3909446467,17617229520,79388930909,357752184782,
 1612146986543,7264855441424,32737786954481,
 147527050375071,664804576516400,2995824317191471]