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A219993 as a simple table

na(n)
01
11
21255
399621
425445515
53830482893
6735394314429
7125449223494157
822714686725936048
93988620629294917699
10711716770252031164458
11125923932676484373629595
1222380459664033815935121317
133968099315998651724194784995
14704461390023584621534680605823

[1,1,1255,99621,25445515,3830482893,735394314429,
 125449223494157,22714686725936048,
 3988620629294917699,711716770252031164458,
 125923932676484373629595,
 22380459664033815935121317,
 3968099315998651724194784995,
 704461390023584621534680605823]