This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A101867 #7 Mar 20 2024 16:35:57 %S A101867 5,20,34,65,106,136,193,233,306,389,445,544,653,725,850,932,1073,1224, %T A101867 1322,1489,1597,1780,1973,2097,2306,2525,2665,2900,3050,3301,3562, %U A101867 3728,4005,4292,4474,4777,4969,5288,5617,5825,6170,6388,6749,7120,7354,7741,8138 %N A101867 Main diagonal of A101866. %H A101867 Paolo Xausa, <a href="/A101867/b101867.txt">Table of n, a(n) for n = 1..10000</a> %F A101867 a(n) = n^2 + ceiling(n*(1 + sqrt(5))/2)^2. - _Paolo Xausa_, Mar 20 2024 %t A101867 Array[#^2 + Ceiling[#*GoldenRatio]^2 &, 100] (* _Paolo Xausa_, Mar 20 2024 *) %Y A101867 Cf. A001622, A101866. %K A101867 nonn %O A101867 1,1 %A A101867 _N. J. A. Sloane_, Jan 28 2005