OFFSET
0,4
COMMENTS
a(n) = a(A000265(n)).
EXAMPLE
102 in binary is 1100110, we rewrite it from the left so that first two 1's stay same ("11"), then "001" is rewritten to "0", the last 1 to "1", and we ignore the last 0, thus getting 1101, which is binary expansion of 13, thus a(102) = 13.
PROG
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Antti Karttunen, Mar 24 2012
STATUS
approved