A016025 Least k such that (tau(k^k)+k-1)/k=n.

1, 2, 4, 8, 16, 32, 64, 128, 6, 512, 1024, 2048, 10, 8192, 16384, 32768, 14, 15, 262144, 524288, 1048576, 2097152, 4194304, 21, 22, 33554432, 67108864, 12, 26, 536870912, 1073741824, 2147483648, 4294967296, 8589934592, 17179869184, 33, 34, 35

Offset

1,2

Comments

a(n) <= 2^(n-1); if a lesser solution k exists, then it must have more than one distinct prime factor and k < n. - Chandler

Links

Table of n, a(n) for n=1..38.

Crossrefs

Sequence in context: A060376 A047869 A270201 * A036161 A036159 A036157

Adjacent sequences: A016022 A016023 A016024 * A016026 A016027 A016028

Keyword

nonn

Author

Robert G. Wilson v

Extensions

More terms from Robert G. Wilson v, Aug 06 2005

Definition corrected by Vladeta Jovovic, Sep 03 2005

a(30)-a(38) from Ray Chandler, Dec 05 2008

Status

approved