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A050986 Number of n-digit right-truncatable primes. 14
4, 9, 14, 16, 15, 12, 8, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 31, 265-267, 1977.

LINKS

Table of n, a(n) for n=1..8.

Jens Kruse Andersen, Right-truncatable 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

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Last modified September 16 19:26 EDT 2014. Contains 246828 sequences.