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A174985 Start with n, iterate the map k -> A167507(k) until we reach 3, 4, 5 or 6; a(n) = number of steps required. 2
2, 3, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 3, 3, 4, 3, 4, 3, 4, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4, 3, 3, 4, 4, 4, 3, 4, 4, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..100.

CROSSREFS

Cf. A167507, A174984, A174987.

Sequence in context: A122402 A179008 A255252 * A008406 A039735 A283761

Adjacent sequences:  A174982 A174983 A174984 * A174986 A174987 A174988

KEYWORD

nonn,word

AUTHOR

Jacques ALARDET, Apr 03 2010

EXTENSIONS

Edited by N. J. A. Sloane, Apr 05 2010

STATUS

approved

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Last modified June 18 14:54 EDT 2021. Contains 345119 sequences. (Running on oeis4.)