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A212916 as a simple table

na(n)
01
11
22
34
410
526
676
7232
8764
92620
109496
1135695
12140140
13568360
142389192
1510338315
1646118592
17211120144
18992316928
194773362476
2023500234512
21118125854560
22606106812640
233168660576795
2416872323635132
2591369920670420
26503022250919640
272811920834508705

[1,1,2,4,10,26,76,232,764,2620,9496,35695,140140,
 568360,2389192,10338315,46118592,211120144,
 992316928,4773362476,23500234512,118125854560,
 606106812640,3168660576795,16872323635132,
 91369920670420,503022250919640,2811920834508705]