A343174 Partial sums of paper-folding sequence A014577.

1, 2, 2, 3, 4, 4, 4, 5, 6, 7, 7, 7, 8, 8, 8, 9, 10, 11, 11, 12, 13, 13, 13, 13, 14, 15, 15, 15, 16, 16, 16, 17, 18, 19, 19, 20, 21, 21, 21, 22, 23, 24, 24, 24, 25, 25, 25, 25, 26, 27, 27, 28, 29, 29, 29, 29, 30, 31, 31, 31, 32, 32, 32, 33, 34, 35, 35, 36, 37, 37, 37, 38, 39, 40, 40, 40

Offset: 0

Author

N. J. A. Sloane, Apr 23 2021

Keywords

• nonn

Links

• Paolo Xausa, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A014577.

Programs

Mathematica

Accumulate[(1 + JacobiSymbol[-1, Range[100]])/2] (* Paolo Xausa, May 26 2024 *)

Formula

a(n) ~ n/2. - Amiram Eldar, Sep 14 2024