login
A295977
Number of nonnegative solutions to (x,y) = 1 and x^3 + y^3 <= n.
1
0, 2, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11
OFFSET
0,2
FORMULA
a(n) = a(n-1) + A295976(n) for n > 0.
PROG
(PARI) {a(n) = sum(i=0, n, sum(j=0, n, if((gcd(i, j)==1) && (i^3+j^3<=n), 1, 0)))}
CROSSREFS
Sequence in context: A093390 A025789 A080585 * A089361 A035441 A025784
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Dec 01 2017
STATUS
approved