|
| |
|
|
A032735
|
|
Palindromes that cannot be prefixed or followed by any digit to form a prime.
|
|
0
| |
|
|
11111, 60806, 65356, 1115111, 1392931, 1643461, 1762671, 1797971, 1799971, 1863681, 1911191, 2005002, 2190912, 2429242, 2499942, 2512152, 2708072, 2714172, 2794972, 2845482, 2848482, 2942492, 2993992, 3150513, 3239323
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
EXAMPLE
| 11111 prefixed or followed with a digit from (1,2,3,4,5,6,7,8,9) never yields a prime: '2'11111'3' = 29 x 72797.
|
|
|
CROSSREFS
| Cf. A032682-A032685 and A032702-A032733.
Sequence in context: A204226 A158619 A094324 * A038447 A115834 A115810
Adjacent sequences: A032732 A032733 A032734 * A032736 A032737 A032738
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.
|
| |
|
|
