A101863 Main diagonal of A101858.

2, 13, 25, 52, 89, 117, 170, 208, 277, 356, 410, 505, 610, 680, 801, 881, 1018, 1165, 1261, 1424, 1530, 1709, 1898, 2020, 2225, 2440, 2578, 2809, 2957, 3204, 3461, 3625, 3898, 4181, 4361, 4660, 4850, 5165, 5490, 5696, 6037, 6253, 6610, 6977, 7209, 7592, 7985

Offset

1,1

Links

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

Formula

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

Mathematica

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

Crossrefs

Cf. A001622, A101858.

Sequence in context: A194887 A230857 A263537 * A297955 A298578 A299570

Adjacent sequences: A101860 A101861 A101862 * A101864 A101865 A101866

Keyword

nonn

Author

N. J. A. Sloane, Jan 28 2005

Status

approved