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A268320 as a simple table

na(n)
12
24
311
433
5114
6435
71829
88377
941504
10220958
111256927
127602273
1348676925
14328685063
152332565079
1617344752142
17134774766541
181091701884974
199198355199792
2080459135884925
21729337831748484
226840215461149149

[2,4,11,33,114,435,1829,8377,41504,220958,1256927,
 7602273,48676925,328685063,2332565079,17344752142,
 134774766541,1091701884974,9198355199792,
 80459135884925,729337831748484,6840215461149149]