1,3

Arguments m such that A175424(m) >= 0. Also arguments m such that A175419(m) >= 0.

Complement of A175426.

Table of n, a(n) for n=1..47.

27 is in the sequence because a single-digit number is reached in 3 iterations: 7^2 = 49, 9^4 = 6561, ((1^6)^5)^6 = 1, so A175424(27) = 3.

See A175419 - A175426.

Sequence in context: A193989 A321293 A246091 * A246098 A050608 A260424

Adjacent sequences: A175424 A175425 A175426 * A175428 A175429 A175430

nonn,base

Jaroslav Krizek, May 09 2010

approved