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A140809 as a simple table

n a(n)
0 2
1 15
2 165
3 1639
4 16447
5 164499
6 1644919
7 16449370
8 164493391
9 1644934082
10 16449340710
11 164493406181
12 1644934067513
13 16449340668749
14 164493406685661
15 1644934066850411
16 16449340668485217
17 164493406684817903
18 1644934066848209911

[2,15,165,1639,16447,164499,1644919,16449370,
 164493391,1644934082,16449340710,164493406181,
 1644934067513,16449340668749,164493406685661,
 1644934066850411,16449340668485217,
 164493406684817903,1644934066848209911]

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Last modified May 25 11:17 EDT 2019. Contains 323539 sequences. (Running on oeis4.)