A179107 -id:A179107 - cp's OEIS frontend

A198831 Successive records in maximal positive distance d = x^3 - y^2.

0, 4, 20, 28, 39, 47, 81, 135, 152, 207, 216, 270, 496, 546, 615, 732, 832, 1148, 1208, 1343, 1391, 1541, 1750, 2000, 2260, 2548, 2575, 2825, 3679, 3807, 4220, 4604, 5076, 5508, 5835, 5859, 6291, 7538, 7656, 8188, 8423, 8712, 8964, 12092, 12205, 12511, 12926

Offset: 1

Artur Jasinski, Oct 30 2011

nonn

Successive records in A077116.

J. Calvo, J. Herranz, G. Saez, A new algorithm to search for small nonzero |x^3 - y^2| values, Math. Comp. 78 (2009), 2435-2444.

Cf. A077116, A078933, A179107, A179108, A179109.

aa = {}; bb = {}; max = -1; Do[kk = x^3 - Floor[x^(3/2)]^2; If[kk > max, AppendTo[aa, kk]; AppendTo[bb, x]; max = kk], {x, 1, 10000}]; aa

A198832 Values x for records of maxima of positive distance d between a cube of positive integer x and a square of integer y and such that d = x^3 - y^2.

Original entry on oeis.org

1, 2, 6, 8, 10, 12, 13, 19, 26, 31, 33, 39, 40, 43, 46, 52, 68, 72, 78, 84, 90, 93, 95, 105, 109, 133, 139, 149, 152, 162, 176, 180, 190, 202, 211, 219, 231, 243, 265, 269, 272, 306, 330, 336, 341, 346, 351, 356, 366, 393, 407, 422, 436, 446, 450, 467, 501

Offset: 1

Artur Jasinski, Oct 30 2011

nonn

J. Calvo, J. Herranz, G. Saez, A new algorithm to search for small nonzero |x^3 - y^2| values, Math. Comp. 78 (2009), 2435-2444.

Cf. A078933, A179107, A179108, A179109.

aa = {}; bb = {}; max = -1; Do[kk = x^3 - Floor[x^(3/2)]^2; If[kk > max, AppendTo[aa, kk]; AppendTo[bb, x]; max = kk], {x, 1, 10000}]; bb

Definition modified by Harvey P. Dale, Sep 25 2019

cp's OEIS Frontend

A198831 Successive records in maximal positive distance d = x^3 - y^2.

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