

A050986


Number of ndigit righttruncatable primes.


14




OFFSET

1,1


REFERENCES

Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 31, 265267, 1977.


LINKS

Table of n, a(n) for n=1..8.
Jens Kruse Andersen, Righttruncatable primes
Eric Weisstein's World of Mathematics, Truncatable Prime.
Index entries for sequences related to truncatable primes
Index entries for sequences related to numbers of primes in various ranges


CROSSREFS

Cf. A033664, A024785, A032437, A020994, A024770, A052023, A052024, A052025, A050987.
Sequence in context: A091880 A141560 A071864 * A034259 A010452 A190454
Adjacent sequences: A050983 A050984 A050985 * A050987 A050988 A050989


KEYWORD

base,nonn,easy,fini,full


AUTHOR

Eric W. Weisstein


EXTENSIONS

Edited by Ray Chandler, Mar 13 2007


STATUS

approved



