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A190801 as a simple table

n a(n)
1 6
2 15
3 55
4 145
5 889
6 5089
7 55561
8 927889
9 6169249
10 39916921
11 678585889
12 13891047241
13 417210398089
14 1656387533161
15 56229997825849
16 481224167424529
17 11026310270976961
18 236887827111937369
19 10826413936386055921

[6,15,55,145,889,5089,55561,927889,6169249,
 39916921,678585889,13891047241,417210398089,
 1656387533161,56229997825849,481224167424529,
 11026310270976961,236887827111937369,
 10826413936386055921]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)