A120931 Values y corresponding to least x (A120930) of primitive quadruple(n,x,y,z),n<x<y<z satisfying n^3 + x^3 + y^3 = z^3.

8, 40, 5, 22, 123, 33, 17, 1744, 116, 323, 27, 53, 104, 70, 49, 41, 86, 21, 90, 79, 84, 54, 300, 382, 86, 78, 37, 75, 44, 427, 72, 85, 92, 65, 202, 61, 1331, 66, 156, 366, 319, 205, 1165, 118, 199, 148, 295, 491, 263, 64, 477, 3327, 194, 163, 296, 210, 180, 69, 148

Offset

1,1

Links

Table of n, a(n) for n=1..59.

S. Dutch, Cubic Quartets With a,b,c<1000

Prog

(PARI) A(n)=local(x, y, z); x=n+1; while(1, y=x+1; while(n^3+x^3+y^3>=(y+1)^3, if(ispower(n^3+x^3+y^3, 3, &z) && (gcd([n, x, y, z])==1), return(y)); y++; ); x++; ); \\ Martin Fuller, Aug 11 2006

Crossrefs

Sequence in context: A353211 A319362 A154425 * A213345 A207360 A226904

Adjacent sequences: A120928 A120929 A120930 * A120932 A120933 A120934

Keyword

nonn

Author

Lekraj Beedassy, Jul 16 2006

Extensions

More terms from Martin Fuller, Aug 11 2006

Corrected by R. J. Mathar, Nov 25 2006

Status

approved