A106266 Least b such that A106265(n) + b^2 = c^3 for some c (given in A106267).

0, 5, 2, 1, 0, 4, 70, 7, 3, 18, 14, 2, 10, 1, 0, 6, 36, 5, 52, 9, 96, 13, 4, 524, 26, 17, 3, 76, 2, 8, 1, 0, 110, 21, 12, 985, 7, 89, 46, 140, 16, 6, 11, 5, 25, 35, 1710, 4, 20, 3, 15, 2, 1, 0, 57, 63, 40, 9, 322, 51, 2723, 14, 2765, 2315, 19, 8, 24, 364, 29

Offset: 1

Author

Zak Seidov, Apr 28 2005

Keywords

• nonn

Comments

The values A106266(n) = 0 correspond to cubes A106265(n) = c^3. See the main entry A106265 for further comments and references.

Links

• M. F. Hasler, Table of n, a(n) for n = 1..2500 (corrected and extended Aug 10 2024)

Crossrefs

Cf. A106265 (main entry), A106266 (the b-values).

Programs

PARI

[sqrtint(is_A106265(a)^3-a) | a<-A106265] \\ Assumes is_A106265(a) returns the c-value corresponding to a, and A106265 is a list or vector of values of that sequence. -M. F. Hasler, Aug 10 2024

Formula

a(n) = sqrt(A106267(n)^3-A106265(n)). - M. F. Hasler, Oct 05 2013

Extensions

More terms from Robert G. Wilson v, Apr 28 2005

Edited by M. F. Hasler, Oct 04 2013