Bonsoir,
1 (10) = 1 x 2^0 (10) = 1 (2)
3 (10) = 1 x 2^1 + 1 x 2^0 (10) = 11 (2)
7 (10) = 1 x 2^2 + 1 x 2^1 + 1 x 2^0 (10) = 111 (2)
15 (10) = 1 x 2^3 + 1 x 2^2 + 1 x 2^1 + 1 x 2^0 (10) = 1111 (2)
31 (10) = 1 x 2^4 + 1 x 2^3 + 1 x 2^2 + 1 x 2^1 + 1 x 2^0 (10) = 11111 (2)
63 (10) = 1 x 2^5 + 1 x 2^4 + 1 x 2^3 + 1 x 2^2 + 1 x 2^1 + 1 x 2^0 (10) = 111111 (2)
Bonne soirée.
