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A018902 as a simple table

na(n)
01
14
217
373
4314
51351
65813
725012
8107621
9463069
101992482
118573203
1236888569
13158723236
14682950473
152938582657
1612644061866
1754404561359
18234090621197
191007239421908
204333925245949
2118647907964021
2280237764082258
23345245096519227
241485512190349361

[1,4,17,73,314,1351,5813,25012,107621,463069,
 1992482,8573203,36888569,158723236,682950473,
 2938582657,12644061866,54404561359,234090621197,
 1007239421908,4333925245949,18647907964021,
 80237764082258,345245096519227,1485512190349361]