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A322997
Number of iterations of A049820(x) = x - A000005(x) needed to reach an odd number or zero, when starting from x = 2n.
3
0, 1, 1, 2, 2, 3, 3, 4, 1, 4, 5, 5, 2, 6, 6, 6, 7, 7, 1, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 10, 12, 1, 12, 13, 13, 11, 14, 14, 14, 14, 15, 12, 16, 15, 15, 17, 16, 13, 18, 1, 17, 14, 18, 14, 18, 18, 19, 19, 20, 15, 21, 21, 20, 16, 22, 16, 23, 17, 23, 17, 24, 1, 25, 25, 24, 2, 26, 2, 27, 26, 3, 28, 4, 3, 4, 5, 5, 5, 6
OFFSET
0,4
LINKS
FORMULA
a(n) = A322996(2n).
PROG
(PARI) A322997(n) = { n +=n; for(j=0, oo, if((!n)||(n%2), return(j)); n -= numdiv(n)); };
CROSSREFS
Bisection of A322996.
Cf. also A322984.
Sequence in context: A326031 A357629 A357633 * A367315 A085561 A260651
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 05 2019
STATUS
approved