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A181927 as a simple table

na(n)
01
12
23
310
456
5502
66930
7157172
85847270
9350430420
1033789991248
115280020814732
121338210835193414
13548265785425359340
14363248986031094300018
15389399454403643525265020
16675824289510077938157099920

[1,2,3,10,56,502,6930,157172,5847270,350430420,
 33789991248,5280020814732,1338210835193414,
 548265785425359340,363248986031094300018,
 389399454403643525265020,
 675824289510077938157099920]