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A197719
Position of n-th taxi-cab number A001235(n) in the sequence A003325 of sums of two positive cubes.
1
61, 110, 248, 328, 445, 499, 510, 561, 697, 708, 1001, 1004, 1145, 1226, 1309, 1342, 1470, 1563, 1565, 1785, 2012, 2042, 2065, 2259, 2372, 2515, 2540, 2795, 2800, 2806, 2840, 2958, 3076, 3390, 3448, 3779, 3896, 4022, 4031, 4135, 4235, 4320, 4345, 4396, 4412
OFFSET
1,1
FORMULA
A001235(n) = A003325(a(n)).
EXAMPLE
First taxi-cab number A001235(1)=1729 is A003325(61) hence a(1)=61; 2nd taxi-cab number A001235(2)=4104 is A003325(110) hence a(2)=110.
CROSSREFS
Sequence in context: A139898 A171836 A140009 * A140372 A142512 A044248
KEYWORD
nonn
AUTHOR
Zak Seidov, Oct 17 2011
STATUS
approved