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A115943 a(n) is the least k, not multiple of 10, such that k^k contains a palindromic substring of length n. 1
1, 11, 6, 14, 16, 21, 51, 28, 72, 156, 203, 618, 1041, 4205, 3014, 9188, 9629, 24444, 9629, 43657, 9629, 98074, 108589 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

a(5)=16 since the first palindromic substring of length 5

appears in 16^16=18446744(07370)9551616.

CROSSREFS

Cf. A115942.

Sequence in context: A338920 A080501 A122098 * A122088 A304053 A190624

Adjacent sequences:  A115940 A115941 A115942 * A115944 A115945 A115946

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

EXTENSIONS

Extended by Giovanni Resta, Apr 04 2014

STATUS

approved

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Last modified November 27 03:27 EST 2020. Contains 338677 sequences. (Running on oeis4.)