A101867 Main diagonal of A101866.

5, 20, 34, 65, 106, 136, 193, 233, 306, 389, 445, 544, 653, 725, 850, 932, 1073, 1224, 1322, 1489, 1597, 1780, 1973, 2097, 2306, 2525, 2665, 2900, 3050, 3301, 3562, 3728, 4005, 4292, 4474, 4777, 4969, 5288, 5617, 5825, 6170, 6388, 6749, 7120, 7354, 7741, 8138

Offset

1,1

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Formula

a(n) = n^2 + ceiling(n*(1 + sqrt(5))/2)^2. - Paolo Xausa, Mar 20 2024

Mathematica

Array[#^2 + Ceiling[#*GoldenRatio]^2 &, 100] (* Paolo Xausa, Mar 20 2024 *)

Crossrefs

Cf. A001622, A101866.

Sequence in context: A178612 A063133 A029528 * A003339 A047716 A344190

Adjacent sequences: A101864 A101865 A101866 * A101868 A101869 A101870

Keyword

nonn

Author

N. J. A. Sloane, Jan 28 2005

Status

approved