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A074980 Numbers which are not of the form m^p - n^q where p = 2 or 3, q = 2 or 3. 3
6, 10, 14, 34, 42, 46, 50, 58, 62, 66, 70, 78, 82, 86, 90, 102, 110, 114, 122, 130, 134, 158, 162, 166, 178, 182, 194, 202, 206, 210, 214, 226, 230, 234, 238, 246, 250, 254, 258, 266, 274, 278, 290, 302, 306, 310, 314, 322, 326, 330, 338, 354, 358, 374, 378 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This is a famous hard problem and the terms shown are only conjectured values.

Checked for squares and cubes through 1.134x10^25.

LINKS

Table of n, a(n) for n=1..55.

Alf van der Poorten, Remarks on the sequence of 'perfect' powers

EXAMPLE

146 is not in the sequence because 146 = 195^3-2723^2.

CROSSREFS

Cf. A074981.

Sequence in context: A259020 A259021 A171251 * A059218 A095678 A339116

Adjacent sequences:  A074977 A074978 A074979 * A074981 A074982 A074983

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 07 2002

EXTENSIONS

Corrected and extended by Jud McCranie, Oct 10 2002

STATUS

approved

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Last modified September 28 20:34 EDT 2022. Contains 357081 sequences. (Running on oeis4.)