Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,2,3.

A037674

Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,2,3.

Terms

    a(0) =1a(1) =4a(2) =18a(3) =75a(4) =301a(5) =1204a(6) =4818a(7) =19275a(8) =77101a(9) =308404a(10) =1233618a(11) =4934475a(12) =19737901a(13) =78951604a(14) =315806418a(15) =1263225675a(16) =5052902701a(17) =20211610804a(18) =80846443218a(19) =323385772875

External references