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A081922 as a simple table

na(n)
01
14
217
376
4361
51844
610321
764348
8453329
93619684
1032666161
11329434604
123677682937
1344901581716
14595567550321
158505627039484
16130307878338721
172126927187154628
1836912563369550289
19677277819029706124

[1,4,17,76,361,1844,10321,64348,453329,3619684,
 32666161,329434604,3677682937,44901581716,
 595567550321,8505627039484,130307878338721,
 2126927187154628,36912563369550289,
 677277819029706124]