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A271823 as a simple table

na(n)
14
20
32
47
524
684
7300
81089
94004
1014872
1155692
12209950
13795872
143031032
1511589240
1644462565
17171085500
18660009840
192551955340
209887121090
2138374857840
22149184555000
23580807904040
242264193450090
258837215647624
2634529741789904
27135054066707000

[4,0,2,7,24,84,300,1089,4004,14872,55692,209950,
 795872,3031032,11589240,44462565,171085500,
 660009840,2551955340,9887121090,38374857840,
 149184555000,580807904040,2264193450090,
 8837215647624,34529741789904,135054066707000]