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%I #5 May 01 2022 13:19:45
%S 4,3,6,3,18,240,24,3,174,93,57,141,465,501,105,822,552,324,555,237,
%T 867,1488,543,2556,1050,105,51,429,1470,147,567,1329,636,5016,645,
%U 4713,1116,1029,462,567,5757,951,5547,1245,2823,5931,1989,525,6246,1716
%N Least k such that k*10^n +/- 1 are twin primes.
%t Do[ k = 1; While[ ! PrimeQ[ k*10^n + 1 ] || ! PrimeQ[ k*10^n - 1 ], k++ ]; Print[ k ], {n, 0, 50} ]
%Y Cf. A063983, A064213, A064214, A064215, A064217, A064220, A064221.
%K nonn
%O 0,1
%A _Robert G. Wilson v_, Sep 21 2001
%E Offset corrected by _Georg Fischer_, May 01 2022