1,11

a(n)=0 indicates that n is a sturdy number (A125121); that is, no multiple of n has fewer ones than the binary expansion of n. If a(n)>0, n is a flimsy number (A005360). Compare with A143069.

T. D. Noe, Table of n, a(n) for n=1..1000

Sequence in context: A052439 A261239 A261214 * A154725 A010816 A133089

Adjacent sequences: A143070 A143071 A143072 * A143074 A143075 A143076

nonn

T. D. Noe, Jul 22 2008

approved