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A088034 Even numbers k such that k^2-1 is divisible by a square. 1
8, 10, 24, 26, 28, 44, 46, 48, 50, 62, 64, 74, 76, 80, 82, 98, 100, 116, 118, 120, 122, 124, 126, 134, 136, 146, 148, 152, 154, 168, 170, 172, 174, 176, 188, 190, 206, 208, 224, 226, 242, 244, 246, 260, 262, 274, 276, 278, 280, 288, 290, 296, 298, 314, 316, 324 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..55.

MATHEMATICA

Select[Range[2, 400, 2], !SquareFreeQ[#^2-1]&] (* Harvey P. Dale, Jan 15 2012 *)

CROSSREFS

Cf. A088033.

Sequence in context: A102844 A303199 A097543 * A182405 A182366 A271313

Adjacent sequences:  A088031 A088032 A088033 * A088035 A088036 A088037

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Sep 19 2003

EXTENSIONS

More terms from Ray Chandler, Sep 23 2003

STATUS

approved

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Last modified January 21 17:07 EST 2019. Contains 319350 sequences. (Running on oeis4.)