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A120391 as a simple table

na(n)
00
11
21
34
46
518
624
767
885
9231
10287
11771
12949
132536
143108
158285
1610133
1726980
1832966
1987726
20107140
21285035
22348037
23925799
241130311
253006511
263670473
279762796
2811918536
2931700713
3038700153
31102933300
32125660022
33334225018
34408017728

[0,1,1,4,6,18,24,67,85,231,287,771,949,2536,3108,
 8285,10133,26980,32966,87726,107140,285035,348037,
 925799,1130311,3006511,3670473,9762796,11918536,
 31700713,38700153,102933300,125660022,334225018,
 408017728]