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A198831 Successive records in maximal positive distance d = x^3 - y^2. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Successive records in A077116.

LINKS

Table of n, a(n) for n=1..47.

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.

MATHEMATICA

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

CROSSREFS

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

Sequence in context: A194045 A097251 A202070 * A323040 A259755 A317249

Adjacent sequences:  A198828 A198829 A198830 * A198832 A198833 A198834

KEYWORD

nonn

AUTHOR

Artur Jasinski, Oct 30 2011

STATUS

approved

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Last modified November 25 11:32 EST 2020. Contains 338623 sequences. (Running on oeis4.)