A134026 Numbers that are in balanced ternary representation longer than in ternary representation.

2, 5, 6, 7, 8, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131

Offset

1,1

Comments

A134021(a(n)) = A081604(a(n)) + 1;

complement of A134025.

A157671 is a subsequence; A171960(a(n)) < a(n). [From Reinhard Zumkeller, Jan 20 2010]

Links

Table of n, a(n) for n=1..68.

Formula

a(n) = g(n,0,0) with g(n,m,k) = if n=0 then k else if k=3^m-1 then g(n-1,m,3*(k+1)/2+1) else g(n-1,m,k+1).

Crossrefs

Sequence in context: A283974 A028739 A074291 * A220655 A246263 A191205

Adjacent sequences: A134023 A134024 A134025 * A134027 A134028 A134029

Keyword

nonn,base

Author

Reinhard Zumkeller, Oct 19 2007

Status

approved