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A020708 as a simple table

na(n)
04
19
220
344
497
5214
6472
71041
82296
95064
1011169
1124634
1254332
13119833
14264300
15582932
161285697
172835694
186254320
1913794337
2030424368
2167103056
22148000449
23326425266
24719953588
251587907625
263502240516
277724434620
2817036776865
2937575794246
3082876023112

[4,9,20,44,97,214,472,1041,2296,5064,11169,24634,
 54332,119833,264300,582932,1285697,2835694,
 6254320,13794337,30424368,67103056,148000449,
 326425266,719953588,1587907625,3502240516,
 7724434620,17036776865,37575794246,82876023112]