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A085134 Highly composite palindromes. Or palindromes in A002473. Palindromes with the largest prime divisor < 10. 0
1, 2, 3, 4, 5, 6, 7, 8, 9, 252, 343, 525, 686, 48384, 65856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No more terms < 10^100; probably no more terms. - David Wasserman, Feb 22 2005

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

252 = 2^2*3^2*7.

MATHEMATICA

Select[Range[66000], PalindromeQ[#]&&FactorInteger[#][[-1, 1]]<10&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 07 2018 *)

CROSSREFS

Cf. A002473.

Sequence in context: A117954 A029966 A219324 * A229761 A004882 A306853

Adjacent sequences:  A085131 A085132 A085133 * A085135 A085136 A085137

KEYWORD

base,more,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 06 2003

EXTENSIONS

2 more terms from David Wasserman, Feb 22 2005

STATUS

approved

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Last modified November 14 17:24 EST 2019. Contains 329126 sequences. (Running on oeis4.)