A068216 a(n) is the smallest n-digit pseudoprime (to base 2).

341, 1105, 10261, 101101, 1004653, 10004681, 100017223, 1001152801, 10000321321, 100004790097, 1000001376901, 10000130243671, 100000105970311, 1000000191735161, 10000006286491369, 100000010102756401, 1000000114865704261, 10000000494514450733

Offset: 3

Author

Patrick De Geest and Shyam Sunder Gupta, Feb 21 2002

Keywords

• nonn
• base

Links

• P. De Geest, Smallest n-digit pseudoprimes (base 2)
• Index entries for sequences related to pseudoprimes

Crossrefs

Cf. A001567, A067845, A001262, A062568, A062852.

Extensions

One more term from Farideh Firoozbakht, Jan 10 2007

More terms from Jens Kruse Andersen, May 11 2008

Offset corrected by Arkadiusz Wesolowski, Dec 14 2011