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A081662 as a simple table

na(n)
01
13
27
313
422
535
654
782
8124
9188
10287
11442
12687
131077
141701
152703
164316
176917
1811116
1917900
2028866
2146598
2275277
23121668
24196717
25318135
26514579
27832417
281346674
292178743
303525042
315703382
329227992
3314930912
3424158411
3539088798

[1,3,7,13,22,35,54,82,124,188,287,442,687,1077,
 1701,2703,4316,6917,11116,17900,28866,46598,75277,
 121668,196717,318135,514579,832417,1346674,
 2178743,3525042,5703382,9227992,14930912,24158411,
 39088798]