(1/2)*Sum{|d(i)-e(i)|} where Sum{d(i)*3^i} is base 3 representation of n and e(i) are digits d(i) in reverse order.
A037889
(1/2)*Sum{|d(i)-e(i)|} where Sum{d(i)*3^i} is base 3 representation of n and e(i) are digits d(i) in reverse order.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =1a(7) =0a(8) =1a(9) =0a(10) =1a(11) =1a(12) =0a(13) =1a(14) =1a(15) =0a(16) =1a(17) =2a(18) =1a(19) =0a(20) =2a(21) =1a(22) =0a(23) =2a(24) =1a(25) =0a(26) =1a(27) =0a(28) =1a(29) =2
External references
- oeis: A037889