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

1,2

Comments

Notation: (3)< n >(2)

Links

Table of n, a(n) for n=1..80.

Example

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

Crossrefs

A065364, A065365

Sequence in context: A368607 A138483 A110712 * A360364 A092879 A073370

Adjacent sequences: A065363 A065364 A065365 * A065367 A065368 A065369

Keyword

base,easy,sign

Author

Marc LeBrun, Oct 31 2001

Status

approved