login
A087286
Possible differences between a square and the closest smaller cube.
9
1, 3, 8, 9, 12, 15, 17, 18, 19, 22, 24, 30, 36, 37, 38, 40, 44, 55, 57, 64, 65, 68, 71, 73, 79, 80, 89, 97, 98, 100, 101, 106, 107, 108, 112, 113, 119, 121, 128, 129, 138, 141, 145, 148, 151, 154, 156, 161, 163, 164, 168, 169, 171, 172, 190, 196, 197, 198, 204, 208
OFFSET
1,2
COMMENTS
Integers of the form m^2 - floor((m^2-1)^(1/3))^3 for integer m.
LINKS
Eric Weisstein's World of Mathematics, Mordell Curve.
EXAMPLE
2^2-1^3=3, 3^2-2^3=1, 4^2-2^3=8, 5^2-2^3=17, 6^2-3^3=9, 7^2-3^3=22,...,
1138^2-109^3=15
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Sep 18 2003
STATUS
approved