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A030530 n appears A070939(n) times. 6
0, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 21, 21, 21 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

MATHEMATICA

Join[{0}, Table[Table[n, IntegerLength[n, 2]], {n, 30}]]//Flatten (* Harvey P. Dale, Oct 20 2016 *)

PROG

(Haskell)

import Data.List (unfoldr)

a030530 n = a030530_list !! (n-1)

a030530_list = 0 : concatMap (\n -> unfoldr

   (\x -> if x == 0 then Nothing else Just (n, div x 2)) n) [1..]

-- Reinhard Zumkeller, Dec 05 2011

CROSSREFS

A030190(n) = T(a(n), A083652(a(n))-n-1), T as defined in A083651, a(A083652(k))=k+1.

Sequence in context: A082462 A276581 A005041 * A084500 A084557 A024417

Adjacent sequences:  A030527 A030528 A030529 * A030531 A030532 A030533

KEYWORD

easy,nonn

AUTHOR

J. Lowell

STATUS

approved

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Last modified February 23 23:15 EST 2018. Contains 299595 sequences. (Running on oeis4.)