Williams primes of the form 8•9ⁿ+1

2020-05-17: Found n =&#160;586240 , Paul Vanderveen
2020-05-15: Checked to n = 750000 , Paul Vanderveen
2016-02-22: Checked to n = 200000 , <a href="/z/index.php?title=Robert_Price&amp;action=edit&amp;redlink=1" class="new" title="Robert Price (page does not exist)">Robert Price

Reserved! This sequence is currently reserved by: Paul Vanderveen

Current data

Base :	9
Count :	18
Max n :	200,000
Date :	2016-02-22
Reserved :	Paul VanderveenPaul Vanderveen/Reserved

1, 4, 5, 11, 26, 29, 38, 65, 166, 490, 641, 2300, 9440, 44741, 65296, 161930, ..., 586240

Remarks :

The sequence A056799 in OEIS