Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
A033131
Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
Terms
- a(0) =1a(1) =5a(2) =20a(3) =81a(4) =325a(5) =1300a(6) =5201a(7) =20805a(8) =83220a(9) =332881a(10) =1331525a(11) =5326100a(12) =21304401a(13) =85217605a(14) =340870420a(15) =1363481681a(16) =5453926725a(17) =21815706900a(18) =87262827601a(19) =349051310405
External references
- oeis: A033131