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Generalized Cullen primes of the form n•18n+1

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Current data

ASCII format : n*18^n+1
Base : 18
Count : 16
Max n : 1,000,000
Date : 2023-05-20
1[1], 3, 21, 23, 842, 1683, 3401, 16839, 49963, 60239, 150940, 155928, 219525, 342091, 353901, 612497
Remarks :
The sequence A007648 in OEIS
See additional history at Generalized Cullen primes & Discoverers of Generalized Cullen primes.

Notes

  1. Twin n=1

History