Williams primes of the form 8•9n-1

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Current data

Base : 9
Count : 17
Max n : 200,000
Date : 2014-03-16
1, 2, 5, 25, 85, 92, 97, 649, 2017, 2978, 3577, 4985, 17978, 21365, 66002, 95305, 142199
Remarks :
Should be (re)used from 8•3n-1.
The sequence A268356 in OEIS and halved even values of sequence A005541 in OEIS

History