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A261207 as a simple table

na(n)
00
11
23
314
470
5363
61925
710364
856412
9309605
101710247
119496746
1252960674
13296408847
141663998345
159365980152
1652837614456
17298676661129
181691325089867
199592607927750
2054482777049918
21309837754937843
221764046900535053
2310054065679046004
2457357471874390100

[0,1,3,14,70,363,1925,10364,56412,309605,1710247,
 9496746,52960674,296408847,1663998345,9365980152,
 52837614456,298676661129,1691325089867,
 9592607927750,54482777049918,309837754937843,
 1764046900535053,10054065679046004,
 57357471874390100]