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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 * A284956 A261445 A034259

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 July 20 10:42 EDT 2017. Contains 289625 sequences.