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A212915 as a simple table

na(n)
01
11
22
34
410
526
676
7232
8764
92620
109495
1135685
12140031
13567503
142382394
1510290308
1645780063
17208852719
18977152266
194674398032
2022854255698
21113957313538
22579157509082
232995214721530
2415752586526189
2584145056172981
26456221504976506
272508227921637772

[1,1,2,4,10,26,76,232,764,2620,9495,35685,140031,
 567503,2382394,10290308,45780063,208852719,
 977152266,4674398032,22854255698,113957313538,
 579157509082,2995214721530,15752586526189,
 84145056172981,456221504976506,2508227921637772]