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A166266 Number of 1's in binary expansion of A000110(n). 1
1, 1, 1, 2, 4, 3, 5, 7, 4, 8, 8, 10, 10, 12, 14, 15, 15, 16, 22, 19, 25, 29, 25, 31, 25, 31, 28, 39, 32, 35, 41, 42, 46, 47, 46, 52, 49, 52, 59, 53, 59, 55, 75, 69, 58, 68, 62, 85, 81, 82, 55, 81, 82, 89, 89, 97, 87, 96, 92, 95, 103, 99, 120, 105, 105, 113, 106, 126, 125, 126 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

Clear[lst, f, n, k, be] f[n_]:=Plus@@IntegerDigits[n, 2]; be[n_]:=Sum[StirlingS2[n, k], {k, 0, n}]; lst={}; Do[AppendTo[lst, f[be[n]]], {n, 0, 6!}]; lst

DigitCount[#, 2, 1]&/@BellB[Range[0, 70]] (* Harvey P. Dale, Dec 30 2018 *)

CROSSREFS

Sequence in context: A102767 A336640 A258238 * A011295 A082016 A074135

Adjacent sequences:  A166263 A166264 A166265 * A166267 A166268 A166269

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Oct 10 2009

EXTENSIONS

Edited by N. J. A. Sloane, Oct 13 2009

STATUS

approved

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Last modified January 22 07:47 EST 2021. Contains 340360 sequences. (Running on oeis4.)