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A155639 as a simple table

na(n)
01
12
212
392
4672
54652
631032
7201812
81288992
98124572
1050700552
11313968932
121932641712
1311839990892
1472260648472
15439667406452
162668522016832
1716163719991612
1897745259402792
19590286253682372
203560791008422352

[1,2,12,92,672,4652,31032,201812,1288992,8124572,
 50700552,313968932,1932641712,11839990892,
 72260648472,439667406452,2668522016832,
 16163719991612,97745259402792,590286253682372,
 3560791008422352]