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 A046261 Largest palindromic substring in 3^n. 3
 1, 3, 9, 7, 8, 4, 9, 8, 656, 9, 9, 1771, 1441, 323, 969, 434, 7, 9, 9, 162261, 44, 353, 313, 414, 282, 88, 828, 484, 767, 3773, 94649, 767, 888, 5665, 6996, 999, 999, 909, 2992, 76267, 545, 717, 989, 707, 232, 55, 959, 8778, 6336, 32923, 7897987, 3693963, 989 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Harvey P. Dale, Table of n, a(n) for n = 0..500 MATHEMATICA Max/@Table[Select[FromDigits/@Flatten[Table[Partition[ IntegerDigits[ 3^k], n, 1], {n, IntegerLength[3^k]}], 1], PalindromeQ], {k, 0, 60}] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 25 2018 *) CROSSREFS Cf. A046269. Sequence in context: A247003 A201943 A201760 * A074806 A010634 A267363 Adjacent sequences:  A046258 A046259 A046260 * A046262 A046263 A046264 KEYWORD nonn,base AUTHOR Patrick De Geest, Jun 15 1998 STATUS approved

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Last modified August 17 17:59 EDT 2022. Contains 356189 sequences. (Running on oeis4.)