A082770 a(n) = smallest palindromic prime that begins with A082768(n) and contains more than twice the number of digits in A082768(n), or 0 if no such number exists.

101, 313, 727, 919, 10301, 11311, 12421, 13331, 14341, 15451, 16061, 17471, 18181, 19391, 30103, 31013, 32323, 33533, 34543, 35053, 36263, 37273, 38083, 39293, 70207, 71317, 72227, 73037, 74047, 75557, 76367, 77377, 78487, 79397, 90709

Offset

1,1

Comments

Conjecture: no entry is zero. In most cases the number of digits required is 2k+1 where k is the number of digits in A082768(n). What is the first entry that requires more (than 2k+1) digits?

Answer to question: A082768(37) = 92, a(37) = 9200029. - David Wasserman, Jul 28 2005

Links

Table of n, a(n) for n=1..35.

Crossrefs

Cf. A082768, A082769.

Sequence in context: A252942 A090287 A134971 * A161907 A195855 A142769

Adjacent sequences: A082767 A082768 A082769 * A082771 A082772 A082773

Keyword

base,nonn

Author

Amarnath Murthy, Apr 18 2003

Extensions

More terms from David Wasserman, Jul 28 2005

Status

approved