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A099258 Inverse of A099257. 3
1, 3, 2, 4, 6, 7, 8, 9, 5, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 11, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 23, 46, 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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Permutation of the natural numbers;

a(A033484(n)) = A033484(n);

a(A033484(n) - 1) = A033484(n)/2 = A055010(n).

LINKS

Table of n, a(n) for n=1..72.

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(n) = if n = 3*2^k - 2 then n else (if n = 3*2^k - 3 then (n + 1)/2 else n + 1).

CROSSREFS

Sequence in context: A014685 A239516 A021312 * A264905 A254052 A105746

Adjacent sequences:  A099255 A099256 A099257 * A099259 A099260 A099261

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 09 2004

STATUS

approved

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Last modified December 10 05:49 EST 2018. Contains 318044 sequences. (Running on oeis4.)