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A087809 as a simple table

na(n)
01
14
229
3229
41847
514974
6121430
7983476
87952111
964193728
10517447289
114165721377
1233500374796
13269166095800
142161064409680
1517339917293304
16139060729285871
171114752741216196
188933074352513183
1971564554425680839

[1,4,29,229,1847,14974,121430,983476,7952111,
 64193728,517447289,4165721377,33500374796,
 269166095800,2161064409680,17339917293304,
 139060729285871,1114752741216196,8933074352513183,
 71564554425680839]