A061490 Smallest number which when iterated n times under A003285 gives a square.

1, 2, 3, 19, 166, 8269, 11568181

Offset

0,2

Comments

Smallest m such that A003285(A003285(..(m))) = square with n iterations.

Links

Table of n, a(n) for n=0..6.

Example

A003285(A003285(3))=1, 3 is the smallest number requiring 2 iterations to reach a square number, so a(2)=3.

Crossrefs

Cf. A003285.

Sequence in context: A032329 A219285 A066227 * A048827 A032077 A014547

Adjacent sequences: A061487 A061488 A061489 * A061491 A061492 A061493

Keyword

more,nonn

Author

Naohiro Nomoto, Nov 08 2001

Extensions

a(6) from Sean A. Irvine, Feb 18 2023

Status

approved