Spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the four integers forming any 2 X 2 square have all digits 0 through 9 (with duplicate digits allowed).
A337368
Spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the four integers forming any 2 X 2 square have all digits 0 through 9 (with duplicate digits allowed).
Terms
- a(0) =0a(1) =1a(2) =2a(3) =3456789a(4) =3a(5) =12a(6) =4a(7) =356789a(8) =24a(9) =5a(10) =306789a(11) =45a(12) =6a(13) =103789a(14) =7a(15) =102a(16) =8a(17) =45679a(18) =80a(19) =35679a(20) =9a(21) =1028a(22) =10a(23) =11a(24) =306798a(25) =13a(26) =42a(27) =14a(28) =20a(29) =13789
External references
- oeis: A337368