A083144 Smallest k such that k*prime(n) is an n-digit palindrome, or 0 if no such number exists.

1, 11, 101, 143, 991, 7777, 59353, 534479, 4353087, 34521069, 322583871, 2703002973, 24391597561, 232583697907, 2127673106383, 18867930754717, 169491573220339, 1639345391147541, 14925373676119403, 140845071661971831

Offset

1,2

Comments

Conjecture: no entry is zero.

Links

Table of n, a(n) for n=1..20.

Formula

a(n) = A083143(n)/prime(n).

Crossrefs

Cf. A083143.

Sequence in context: A068685 A109830 A052035 * A058411 A134462 A156753

Adjacent sequences: A083141 A083142 A083143 * A083145 A083146 A083147

Keyword

base,nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003

Extensions

More terms from Patrick De Geest, Jun 09 2003

Status

approved