OFFSET
1,1
EXAMPLE
The numbers 7-13 are represented by 50, 51, 52, 53, 54, 55, 56 respectively in base 7/5. These are the only integers with two digits, and so a(2)=7.
PROG
(Sage)
A=[1]
for i in [1..60]:
A.append(ceil((7-5)/5*sum(A)))
[7*x for x in A]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
James Van Alstine, Jul 21 2014
STATUS
approved