A102382 A001221(A004094(n)).

0, 1, 1, 1, 1, 1, 2, 1, 2, 2, 1, 2, 2, 2, 2, 3, 2, 1, 4, 3, 4, 4, 4, 3, 1, 4, 4, 5, 2, 2, 2, 3, 3, 3, 2, 2, 3, 1, 2, 5, 4, 4, 3, 4, 4, 1, 4, 2, 4, 4, 3, 3, 3, 4, 2, 1, 3, 3, 4, 6, 5, 2, 4, 4, 4, 2, 3, 5, 5, 3, 1, 6, 4, 3, 4, 6, 3, 1, 4, 4, 4, 5, 4, 4, 3, 2, 2, 3, 3, 3, 6, 3, 4, 4, 3, 4, 4, 4, 3, 8, 3, 4, 5, 3, 4

Offset

0,7

Links

Table of n, a(n) for n=0..104.

Example

n=19: reverse(2^19) = 882425 = 5^2*47*751, so a(19)=3.
n=38: reverse(2^38) = 449609778472 = 2^3*56201222309, so a(38)=2. - Sean A. Irvine, Sep 26 2023

Crossrefs

Cf. A102383, A102384, A102385.

Sequence in context: A245760 A085761 A352884 * A024890 A254123 A007895

Adjacent sequences: A102379 A102380 A102381 * A102383 A102384 A102385

Keyword

nonn

Author

Reinhard Zumkeller, Jan 06 2005

Extensions

a(38) corrected by Sean A. Irvine, Sep 26 2023

Status

approved