A065366 Replace 3^k with (-2)^k in balanced ternary expansion of n.

1, -3, -2, -1, 5, 6, 7, 3, 4, 5, 1, 2, 3, -11, -10, -9, -13, -12, -11, -15, -14, -13, -7, -6, -5, -9, -8, -7, -11, -10, -9, -3, -2, -1, -5, -4, -3, -7, -6, -5, 21, 22, 23, 19, 20, 21, 17, 18, 19, 25, 26, 27, 23, 24, 25, 21, 22, 23, 29, 30, 31, 27, 28, 29, 25, 26, 27, 13, 14, 15, 11, 12, 13, 9, 10, 11, 17, 18, 19, 15

Offset: 1

Author

Marc LeBrun, Oct 31 2001

Keywords

• base
• easy
• sign

Comments

Notation: (3)< n >(2)

Examples

			5 = +1(9)-1(3)-1(1) -> +1(4)-1(-2)-1(1) = 5 = a(5)
		

Crossrefs

A065364, A065365