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A027231 as a simple table

na(n)
01
12
26
326
491
5424
61563
77490
828363
9138154
10532277
112622108
1210229514
1350827494
14200236656
151001864238
163978724091
1720024629606
1880072228433
19405071776024
201629554359654
218281491341260
2233495987519034
23170937706521070
24694795683685757
253559265886170942

[1,2,6,26,91,424,1563,7490,28363,138154,532277,
 2622108,10229514,50827494,200236656,1001864238,
 3978724091,20024629606,80072228433,405071776024,
 1629554359654,8281491341260,33495987519034,
 170937706521070,694795683685757,3559265886170942]