Williams primes of the form 6•7n-1

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Current data

Base : 7
Count : 21
Max n : 200,000
Date : 2015-11-13
1, 2, 7, 18, 55, 69, 87, 119, 141, 189, 249, 354, 1586, 2135, 2865, 2930, 4214, 7167, 67485, 74402, 79326
Remarks :
The sequence A046866 in OEIS

History