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A240397 as a simple table

na(n)
14
2120
31232
48656
550756
6263816
71378418
86579675
929397762
10123759215
11496112681
121900666919
136979266540
1424609313384
1583512254200
16273448859847
17866039269080
182658909119696
197930100322771
2023019222158010
2165147052918163

[4,120,1232,8656,50756,263816,1378418,6579675,
 29397762,123759215,496112681,1900666919,
 6979266540,24609313384,83512254200,273448859847,
 866039269080,2658909119696,7930100322771,
 23019222158010,65147052918163]