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A028567 Numbers n such that n(n+8) is a palindrome. 0
0, 1, 3, 66, 88, 91, 173, 216, 225, 284, 294, 696, 707, 924, 2235, 2828, 6996, 9394, 28314, 30031, 57489, 69996, 93844, 188583, 228175, 241097, 283778, 298144, 597883, 699996, 896478, 1934063, 2281817, 6999996, 7243225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..35.

P. De Geest, Palindromic Quasipronics of the form n(n+x)

Erich Friedman, What's Special About This Number? (See entries 696, 2235, 2828, 6996, 9394.)

MATHEMATICA

Select[Range[0, 8*10^6], PalindromeQ[#(#+8)]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 28 2017 *)

CROSSREFS

Sequence in context: A036778 A065400 A091470 * A003359 A256151 A238471

Adjacent sequences:  A028564 A028565 A028566 * A028568 A028569 A028570

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified June 28 20:39 EDT 2017. Contains 288840 sequences.