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A074801 as a simple table

na(n)
01
12
25
310
428
550
6116
7178
8528
91282
102794
114778
1210594
1317166
1433426
1560242
16183072
17304202
18759716
191288642
202965286
216352098
2211776586
2318326642
2448714362
2595769336
26172377654
27417138342
281004225842
291633822142
303266821106
314706920002
3216520601024

[1,2,5,10,28,50,116,178,528,1282,2794,4778,10594,
 17166,33426,60242,183072,304202,759716,1288642,
 2965286,6352098,11776586,18326642,48714362,
 95769336,172377654,417138342,1004225842,
 1633822142,3266821106,4706920002,16520601024]