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A270879 as a simple table

na(n)
00
11
21
32
47
510
620
734
865
9124
10230
11430
12800
131494
142792
155210
169727
1718155
1833892
1963271
20118110
21220484
22411588
23768337
241434304
252677500
264998252
279330536
2817417876
2932515004
3060697720
31113308101
32211519073
33394855430
34737100483
351375989990

[0,1,1,2,7,10,20,34,65,124,230,430,800,1494,2792,
 5210,9727,18155,33892,63271,118110,220484,411588,
 768337,1434304,2677500,4998252,9330536,17417876,
 32515004,60697720,113308101,211519073,394855430,
 737100483,1375989990]