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A000050 as a simple table

na(n)
01
12
23
35
49
516
629
754
897
9180
10337
11633
121197
132280
144357
158363
1616096
1731064
1860108
19116555
20226419
21440616
22858696
231675603
243273643
256402706
2612534812
2724561934
2848168461
2994534626
30185661958
31364869032
32717484560
331411667114
342778945873
355473203125

[1,2,3,5,9,16,29,54,97,180,337,633,1197,2280,4357,
 8363,16096,31064,60108,116555,226419,440616,
 858696,1675603,3273643,6402706,12534812,24561934,
 48168461,94534626,185661958,364869032,717484560,
 1411667114,2778945873,5473203125]