A071277 a(1) = 1; a(n) = smallest palindrome which is a nontrivial product of n palindromes (repetitions allowed).

1, 4, 8, 88, 252, 2112, 2112, 2112, 4224, 8448, 48384, 48384, 405504, 405504, 405504, 40955904, 677707776, 677707776, 677707776, 677707776

Offset

1,2

Links

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

Example

a(4) = 88 = 2*2*2*11.
a(5) = 252 = 2*2*3*3*7.

Crossrefs

Cf. A071276, A378140.

Sequence in context: A120281 A331986 A057974 * A336795 A273060 A215844

Adjacent sequences: A071274 A071275 A071276 * A071278 A071279 A071280

Keyword

base,nonn,more

Author

Amarnath Murthy, Jun 07 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 02 2003

Name corrected by Robert Israel, Jan 08 2025

Status

approved