OFFSET
1,6
COMMENTS
Terms 0 .. 10 occur for the first time at n = 1, 2, 6, 12, 126, 192, 486, 492, 498, 504, 65458.
LINKS
FORMULA
If n is odd, a(n) = 0, if n is even, a(n) = 1 + a(A011371(n)).
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Antti Karttunen, Jan 05 2019
STATUS
approved