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A199557 as a simple table

n a(n)
0 11
1 81
2 641
3 5121
4 40961
5 327681
6 2621441
7 20971521
8 167772161
9 1342177281
10 10737418241
11 85899345921
12 687194767361
13 5497558138881
14 43980465111041
15 351843720888321
16 2814749767106561
17 22517998136852481
18 180143985094819841

[11,81,641,5121,40961,327681,2621441,20971521,
 167772161,1342177281,10737418241,85899345921,
 687194767361,5497558138881,43980465111041,
 351843720888321,2814749767106561,
 22517998136852481,180143985094819841]

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Last modified December 1 05:02 EST 2022. Contains 358454 sequences. (Running on oeis4.)