A117932 Inverse of A117931.

1, 2, 6, 8, 4, 10, 3, 12, 5, 7, 14, 16, 18, 9, 20, 22, 24, 26, 11, 28, 30, 32, 13, 34, 15, 36, 38, 17, 40, 42, 19, 44, 21, 46, 23, 48, 50, 25, 52, 54, 27, 56, 29, 58, 60, 31, 62, 64, 66, 33, 68, 70, 35, 72, 74, 37, 76, 78, 39, 80, 82, 41, 84, 86, 88, 43, 90, 92, 94, 45, 96, 98

Offset

1,2

Comments

A permutation of the natural numbers.

Links

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

Example

Sequence A117931 is the function consisting of
(1,1),(2,2),(3,7),(4,5),(5,9),(6,3),(7,10),(8,4),...
Reversing components gives
(1,1),(2,2),(7,3),(5,4),(9,5),(3,6),(10,7),(4,8),...
Order these by first components and then suppress them, leaving
1,2,6,8,4,10,...

Crossrefs

Cf. A117931, A117933.

Sequence in context: A048741 A276709 A115317 * A073411 A121862 A095677

Adjacent sequences: A117929 A117930 A117931 * A117933 A117934 A117935

Keyword

nonn

Author

Clark Kimberling, Apr 03 2006

Status

approved