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A219554 as a simple table

na(n)
01
12
25
317
446
5123
6323
7809
81966
94660
1010792
1124447
1254344
13118681
14254991
15539852
161127279
172323849
184733680
199535079
2019005282
2137507802
2273333494
23142112402
24273092320
25520612305
26984944052
271849920722
283450476080
296393203741
3011770416313
3121538246251

[1,2,5,17,46,123,323,809,1966,4660,10792,24447,
 54344,118681,254991,539852,1127279,2323849,
 4733680,9535079,19005282,37507802,73333494,
 142112402,273092320,520612305,984944052,
 1849920722,3450476080,6393203741,11770416313,
 21538246251]