OFFSET
1,2
COMMENTS
a(n+1) <= 2*a(n) for all n >= 2.
EXAMPLE
PROG
(PARI) lista(nn) = {my(k, r=0); for(n=1, nn, k=1; while(fromdigits(binary(k))%n>0, k++); if(k>r, r=k; print1(n, ", "))); } \\ Jinyuan Wang, May 16 2020; a(1)=0 inserted by Georg Fischer, Jun 24 2020; a(1)=0 removed again by David A. Corneth, Feb 19 2024
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
David Radcliffe, Feb 08 2016
EXTENSIONS
a(1)=0 inserted by Georg Fischer, Jun 24 2020
Initial 0 removed for consistency with change in A004290 by Sean A. Irvine, Feb 19 2024
STATUS
approved