A088743 a(n) = 2*A088023(n) - 1.

1, 3, 5, 5, 7, 9, 9, 9, 11, 13, 15, 15, 15, 17, 17, 17, 19, 21, 23, 23, 25, 27, 27, 27, 27, 29, 31, 31, 31, 33, 33, 33, 35, 37, 39, 39, 41, 43, 43, 43, 45, 47, 49, 49, 49, 51, 51, 51, 51, 53, 55, 55, 57, 59, 59, 59, 59, 61, 63, 63, 63, 65, 65, 65, 67, 69, 71, 71, 73, 75

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..10000

Mathematica

2*Nest[Join[#, Range[Length[#]] + Reverse[#]] &, {1}, 7] - 1 (* Paolo Xausa, Sep 24 2025 *)

Crossrefs

Cf. A088023.

Sequence in context: A023840 A276501 A131421 * A219844 A168056 A122800

Adjacent sequences: A088740 A088741 A088742 * A088744 A088745 A088746

Keyword

nonn

Author

Gary W. Adamson, Oct 12 2003

Extensions

Edited by Don Reble, Nov 13 2005

a(33) onwards from Andrew Howroyd, Sep 24 2025

Status

approved