OFFSET
1,27
MAPLE
A037802 := proc(n)
a := 0 ;
dgs := convert(n, base, 4);
for i from 2 to nops(dgs) do
if op(i, dgs)<op(i-1, dgs) then
a := a+1 ;
end if;
end do:
a ;
end proc: # R. J. Mathar, Oct 15 2015
CROSSREFS
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Sign in Name corrected by R. J. Mathar, Oct 15 2015
STATUS
approved