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A329907 Number of iterations of A329904 needed to reach 1. 4
0, 1, 2, 2, 3, 3, 4, 4, 3, 5, 3, 5, 4, 6, 4, 6, 5, 7, 5, 4, 7, 4, 4, 6, 8, 6, 5, 8, 5, 5, 7, 9, 7, 6, 9, 6, 6, 4, 8, 10, 5, 8, 5, 5, 7, 10, 7, 7, 5, 9, 11, 6, 9, 5, 6, 6, 8, 11, 8, 8, 6, 10, 12, 7, 10, 6, 7, 7, 5, 9, 12, 5, 6, 9, 9, 7, 6, 11, 6, 13, 8, 11, 7, 8, 8, 6, 10, 13, 6, 7, 10, 10, 6, 8, 7, 12, 7, 14, 9, 12, 8, 9, 9, 7, 11 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Equally, starting from A025487(n), number of iterations of A329899 needed to reach 1.

Any k > 0 occurs 2^(k-1) times in total in this sequence.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

FORMULA

a(1) = 0; for n > 1, a(n) = 1 + a(A329904(n)).

a(1) = 0; for n > 1, a(n) = A070939(A329905(n)).

a(n) = A252464(A181815(n)).

For all n >= 1, a(n) >= A061394(n).

PROG

(PARI) A329907(n) = if(1==n, 0, 1+A329907(A329904(n)));

(PARI) A329907(n) = #binary(A329905(n));

CROSSREFS

Cf. A025487, A061394, A070939, A181815, A252464, A329899, A329904, A329905.

Sequence in context: A339731 A234475 A339082 * A329958 A309969 A036041

Adjacent sequences:  A329904 A329905 A329906 * A329908 A329909 A329910

KEYWORD

nonn

AUTHOR

Antti Karttunen, Dec 24 2019

STATUS

approved

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Last modified May 6 09:45 EDT 2021. Contains 343580 sequences. (Running on oeis4.)