A308891 Positions of 1's on the spiral defined in A308890.

1, 2, 3, 4, 21, 26, 31, 36, 37, 38, 41, 42, 43, 48, 49, 50, 55, 56, 57, 64, 66, 71, 80, 89, 95, 96, 111, 113, 115, 116, 122, 124, 126, 127, 133, 135, 138, 139, 142, 144, 145, 146, 148, 150, 151, 153, 155, 156, 157, 163, 166, 168, 169, 170, 176, 179, 181, 182, 183, 196, 198, 209, 215, 224

Offset

1,2

Comments

Add 1 to the terms of A308885.

Links

Table of n, a(n) for n=1..64.

Crossrefs

Cf. A308884-A308895.

Sequence in context: A225466 A225472 A176234 * A058780 A183458 A109787

Adjacent sequences: A308888 A308889 A308890 * A308892 A308893 A308894

Keyword

nonn

Author

N. J. A. Sloane, Jul 01 2019

Extensions

Definition corrected by N. J. A. Sloane, Feb 08 2026 at the suggestion of Scott R. Shannon.

Status

approved