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A078452
a(1)=1, a(n) = ceiling(n/a(a(a(n-1)))).
0
1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 6, 10, 7, 11, 8, 12, 8, 13, 7, 14, 7, 15, 8, 16, 8, 17, 7, 18, 12, 13, 10, 13, 10, 14, 11, 15, 11, 15, 12, 16, 12, 17, 10, 17, 11, 18, 18, 19, 12, 19, 12, 20, 15, 16, 16, 16, 16, 17, 14, 17, 14, 18, 24, 18, 24, 19, 15, 19, 16, 20, 20, 20
OFFSET
1,2
CROSSREFS
Sequence in context: A102605 A112995 A368887 * A263997 A135636 A025795
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Dec 31 2002
STATUS
approved