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A175427
Starting values which reach a single-digit number after a finite number of iterations of the map x->A175429(x).
8
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50
OFFSET
1,3
COMMENTS
Arguments m such that A175424(m) >= 0. Also arguments m such that A175419(m) >= 0.
Complement of A175426.
EXAMPLE
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.
KEYWORD
nonn,base,more
AUTHOR
Jaroslav Krizek, May 09 2010
STATUS
approved