Write 0,1,2,... in a clockwise spiral on a square lattice, writing each digit at a separate lattice point, starting with 0 at the origin and 1 at x=0, y=-1; sequence gives the numbers on the negative y-axis.
A033990
Write 0,1,2,... in a clockwise spiral on a square lattice, writing each digit at a separate lattice point, starting with 0 at the origin and 1 at x=0, y=-1; sequence gives the numbers on the negative y-axis.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =8a(4) =3a(5) =7a(6) =6a(7) =2a(8) =1a(9) =5a(10) =1a(11) =1a(12) =6a(13) =2a(14) =2a(15) =1a(16) =3a(17) =4a(18) =0a(19) =4a(20) =5a(21) =3a(22) =6a(23) =7a(24) =0a(25) =8a(26) =9a(27) =1a(28) =4a(29) =6
External references
- oeis: A033990