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A006422 as a simple table

na(n)
14
247
3240
4831
52282
65362
711256
821690
939072
1066649
11108680
12170625
13259350
14383348
15552976
16780708
171081404
181472595
191974784
202611763
213410946
224403718
235625800
247117630
258924760
2611098269
2713695192
2816778965
2920419886
3024695592
3129691552
3235501576

[4,47,240,831,2282,5362,11256,21690,39072,66649,
 108680,170625,259350,383348,552976,780708,1081404,
 1472595,1974784,2611763,3410946,4403718,5625800,
 7117630,8924760,11098269,13695192,16778965,
 20419886,24695592,29691552,35501576]