A197719 Position of n-th taxi-cab number A001235(n) in the sequence A003325 of sums of two positive cubes.

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

Links

Chai Wah Wu, Table of n, a(n) for n = 1..1000

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

Cf. A001235, A003325.

Sequence in context: A139898 A171836 A140009 * A140372 A142512 A044248

Adjacent sequences: A197716 A197717 A197718 * A197720 A197721 A197722

Keyword

nonn

Author

Zak Seidov, Oct 17 2011

Status

approved