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A300660 as a simple table

na(n)
00
11
21
32
43
56
613
730
872
9182
10467
111222
123245
138722
1423663
1564758
16178459
17494922
181380105
193867414
2010884821
2130756410
2287215419
23248117618
24707952902
252025479210
265809424605
2716700811214
2848113496645
29138884979562
30401645917999
311163530868090

[0,1,1,2,3,6,13,30,72,182,467,1222,3245,8722,
 23663,64758,178459,494922,1380105,3867414,
 10884821,30756410,87215419,248117618,707952902,
 2025479210,5809424605,16700811214,48113496645,
 138884979562,401645917999,1163530868090]