References to
A007647
Numbers n such that n*10^n + 1 is prime.
1, 3, 9, 21, 363, 2161, 4839, 49521, 10599
1 seqfan posts
Sat Feb 6 04:19:05 CET 2010
[seqfan] I can only give the first 4 values of the main diagonal of Generalized Cullen primes
Index of A-numbers in seqfan:
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