|
| |
|
|
A050987
|
|
Number of n-digit left-truncatable primes.
|
|
13
| |
|
|
4, 11, 39, 99, 192, 326, 429, 521, 545, 517, 448, 354, 276, 212, 117, 72, 42, 24, 13, 6, 5, 4, 3, 1
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
REFERENCES
| Angell, I. O. and Godwin, H. J. "On Truncatable Primes." Math. Comput. 31, 265-267, 1977.
|
|
|
LINKS
| Index entries for sequences related to truncatable primes
P. De Geest, The list of 4260 left-truncatable primes
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Index entries for sequences related to numbers of primes in various ranges
|
|
|
CROSSREFS
| Cf. A033664, A024785, A032437, A020994, A024770, A052023, A052024, A052025, A050986.
Sequence in context: A149256 A149257 A203161 * A137191 A106269 A126758
Adjacent sequences: A050984 A050985 A050986 * A050988 A050989 A050990
|
|
|
KEYWORD
| base,nonn,easy,fini,full
|
|
|
AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
|
|
|
EXTENSIONS
| Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Mar 13 2007
|
| |
|
|
