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A307789 as a simple table

na(n)
01
11
21
32
45
513
635
796
8267
9750
102123
116046
1217303
1349721
14143365
15414584
161201917
173492117
1810165779
1929643870
2086574831
21253188111
22741365049
232173243128
246377181825
2518730782252
2655062586341
27161995031226
28476941691177
291405155255055

[1,1,1,2,5,13,35,96,267,750,2123,6046,17303,49721,
 143365,414584,1201917,3492117,10165779,29643870,
 86574831,253188111,741365049,2173243128,
 6377181825,18730782252,55062586341,161995031226,
 476941691177,1405155255055]