A101867 - OEIS

%I #7 Mar 20 2024 16:35:57

%S 5,20,34,65,106,136,193,233,306,389,445,544,653,725,850,932,1073,1224,

%T 1322,1489,1597,1780,1973,2097,2306,2525,2665,2900,3050,3301,3562,

%U 3728,4005,4292,4474,4777,4969,5288,5617,5825,6170,6388,6749,7120,7354,7741,8138

%N Main diagonal of A101866.

%H Paolo Xausa, <a href="/A101867/b101867.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = n^2 + ceiling(n*(1 + sqrt(5))/2)^2. - _Paolo Xausa_, Mar 20 2024

%t Array[#^2 + Ceiling[#*GoldenRatio]^2 &, 100] (* _Paolo Xausa_, Mar 20 2024 *)

%Y Cf. A001622, A101866.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Jan 28 2005