A072758 a(0)=0, a(1)=1 and for k>1, a(2k)=least positive integer not a(j) for j<2k; and a(2k+1)=a(2k)+Floor(a(2k)/2).

0, 1, 2, 3, 4, 6, 5, 7, 8, 12, 9, 13, 10, 15, 11, 16, 14, 21, 17, 25, 18, 27, 19, 28, 20, 30, 22, 33, 23, 34, 24, 36, 26, 39, 29, 43, 31, 46, 32, 48, 35, 52, 37, 55, 38, 57, 40, 60, 41, 61, 42, 63, 44, 66, 45, 67, 47, 70, 49, 73, 50, 75, 51, 76, 53, 79, 54, 81, 56, 84, 58, 87

Offset

0,3

Comments

A permutation of the nonnegative integers; a(2n)=A072756(n+1), a(2n+1)=A072757(n-1) for n>=1.

Links

Table of n, a(n) for n=0..71.

Crossrefs

Cf. A072756, A072757, A072759.

Sequence in context: A267105 A080542 A330090 * A104464 A352725 A372128

Adjacent sequences: A072755 A072756 A072757 * A072759 A072760 A072761

Keyword

nonn

Author

Clark Kimberling, Jul 09 2002

Status

approved