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A120921 as a simple table

na(n)
01
11
23
312
456
5283
61503
78262
846591
9267984
101565949
119269559
1255465035
13334919996
142038268620
1512489068727
1676980573203
17476994419698
182969444848029
1918563305700106
20116485903375761
21733457500802353

[1,1,3,12,56,283,1503,8262,46591,267984,1565949,
 9269559,55465035,334919996,2038268620,12489068727,
 76980573203,476994419698,2969444848029,
 18563305700106,116485903375761,733457500802353]