Post History
J, 30 char ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 0 0 ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 1 1 ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 2 2 ...
Answer
J, 30 char ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 0 0 ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 1 1 ((2*%:2)%~(1+%:2)&^-(1-%:2)&^) 2 2 ...