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A007053 as a simple table

na(n)
00
11
22
34
46
511
618
731
854
997
10172
11309
12564
131028
141900
153512
166542
1712251
1823000
1943390
2082025
21155611
22295947
23564163
241077871
252063689
263957809
277603553
2814630843
2928192750
3054400028
31105097565
32203280221
33393615806
34762939111
351480206279
362874398515
375586502348
3810866266172
3921151907950
4041203088796
4180316571436
42156661034233
43305761713237
44597116381732
451166746786182
462280998753949
474461632979717
488731188863470
4917094432576778
5033483379603407
5165612899915304
52128625503610475

[0,1,2,4,6,11,18,31,54,97,172,309,564,1028,1900,
 3512,6542,12251,23000,43390,82025,155611,295947,
 564163,1077871,2063689,3957809,7603553,14630843,
 28192750,54400028,105097565,203280221,393615806,
 762939111,1480206279,2874398515,5586502348,
 10866266172,21151907950,41203088796,80316571436,
 156661034233,305761713237,597116381732,
 1166746786182,2280998753949,4461632979717,
 8731188863470,17094432576778,33483379603407,
 65612899915304,128625503610475]