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A119612
Number of integers of the form (nk)^3/(n^3+k^3), k>=1.
0
0, 1, 1, 1, 0, 3, 0, 1, 1, 1, 0, 3, 0, 2, 1, 1, 0, 3, 0, 1, 1, 1, 0, 3, 0, 1, 1, 2, 0, 3, 0, 1, 1, 1, 0, 3, 0, 1, 1, 1, 0, 6, 0, 1, 1, 1, 0, 3, 0, 1, 1, 1, 0, 3, 0, 2, 2, 1, 0, 3, 0, 1, 1, 1, 1, 3, 0, 1, 1, 3, 0, 3, 0, 1, 1, 1, 0, 4, 0, 1, 1, 1, 0, 7, 0, 2, 1, 1, 0, 3, 0, 1, 1, 1, 0, 3, 0, 2, 1, 1, 0
OFFSET
0,6
EXAMPLE
n=14 k=42 (14^3 * 42^3)/(14^3 + 42^3)= (2744 * 74088)/(2744 + 74088) = 203297472 / 76832 = 2646
CROSSREFS
Cf. A071086.
Sequence in context: A119624 A213727 A367452 * A101949 A124796 A343858
KEYWORD
easy,nonn
AUTHOR
STATUS
approved