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A218723 as a simple table

n a(n)
0 0
1 1
2 257
3 65793
4 16843009
5 4311810305
6 1103823438081
7 282578800148737
8 72340172838076673
9 18519084246547628289
10 4740885567116192841985
11 1213666705181745367548161
12 310698676526526814092329217
13 79538861190790864407636279553
14 20361948464842461288354887565569

[0,1,257,65793,16843009,4311810305,1103823438081,
 282578800148737,72340172838076673,
 18519084246547628289,4740885567116192841985,
 1213666705181745367548161,
 310698676526526814092329217,
 79538861190790864407636279553,
 20361948464842461288354887565569]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)