1,1
There is a total number of 16 left truncatable primes in base 4.
Eric Weisstein: Truncatable Prime.
Cf. A024779, A076623.
Sequence in context: A108184 A049091 A039787 this_sequence A128631 A092217 A007481
Adjacent sequences: A129937 A129938 A129939 this_sequence A129941 A129942 A129943
nonn
Martin Renner (martin.renner(AT)gmx.net), Jun 09 2007
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