A265625 - OEIS

A265625

Differences between two positive cubes in more than two ways.

3367, 26936, 90909, 152551, 205352, 215488, 420875, 622232, 625177, 727272, 754299, 757701, 845208, 1147627, 1154881, 1220408, 1642816, 1723904, 2113921, 2454543, 2741256, 3056473, 3367000, 3442887, 3492125, 4118877, 4481477, 4977856, 5001416, 5544504

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..10000

EXAMPLE

3367 = 15^3 - 2^3 = 16^3 - 9^3 = 34^3 - 33^3.

MATHEMATICA

r = 5544504; p = 3; Rest@Sort@Drop[Flatten@Select[Tally@Reap[Do[n = i^p - j^p; If[n <= r, Sow[n]], {i, Ceiling[(r/p)^(1/(p - 1))]}, {j, i}]][[2, 1]], #[[2]] > 2 &], {2, -1, 2}]

CROSSREFS

Cf. A000578, A181123, A014439 (exactly one way), A034179 (more than one way), A014440 (exactly two ways), A014441 (exactly three ways), A333376, A333377.

Sequence in context: A163044 A069367 A031556 * A014441 A293651 A212948

Adjacent sequences: A265622 A265623 A265624 * A265626 A265627 A265628

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Dec 10 2015

STATUS

approved