A115942 a(n) is the least k such that 2^k contains a palindromic substring of length n.

0, 16, 17, 41, 43, 41, 76, 274, 76, 468

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Example

a(6)=41 since the first palindromic substring of length 6
appears in 2^41=2199023(255552).

Crossrefs

Cf. A115943.

Sequence in context: A070869 A101196 A064637 * A052059 A041526 A041524

Adjacent sequences: A115939 A115940 A115941 * A115943 A115944 A115945

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved