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 A332529 #9 Jun 14 2022 19:33:17 %S A332529 0,2,1,5,3,2,7,6,4,3,10,8,7,5,4,13,11,9,8,6,5,15,14,12,10,9,7,6,18,16, %T A332529 15,13,11,10,8,7,20,19,17,16,14,12,11,9,8,23,21,20,18,17,15,13,12,10, %U A332529 9,26,24,22,21,19,18,16,14,13,11,10,28,27,25,23,22 %N A332529 Rectangular array by antidiagonals: T(n,k) = floor(n + k*r), where r = golden ratio = (1+sqrt(5))/2. %C A332529 Column 0: Nonnegative integers. %C A332529 Row 0: Upper Wythoff sequence, A001950, with 0 prepended. %C A332529 Main Diagonal: A003231, with 0 prepended. %C A332529 Diagonal (2,6,9,13,...) = A054770. %C A332529 Diagonal (1,4,8,11,...) = A214971. %C A332529 Diagonal (2,5,9,12,...) = A284624. %F A332529 T(n,k) = floor(n + k*r), where r = (golden ratio)^2 = (3+sqrt(5))/2. %e A332529 Northwest corner: %e A332529 0 2 5 7 10 13 15 %e A332529 1 3 6 8 11 14 16 %e A332529 2 4 7 9 12 15 17 %e A332529 3 5 8 10 13 16 18 %e A332529 4 6 9 11 14 17 19 %e A332529 5 7 10 12 15 18 20 %e A332529 6 8 11 13 16 19 21 %e A332529 As a triangle (antidiagonals): %e A332529 0 %e A332529 1 2 %e A332529 2 3 5 %e A332529 3 4 6 7 %e A332529 4 5 7 8 10 %t A332529 t[n_, k_] := Floor[n + k*GoldenRatio]; %t A332529 Grid[Table[t[n, k], {n, 0, 10}, {k, 0, 10}]] (* A332529 array *) %t A332529 Table[t[n - k, k], {n, 0, 12}, {k, n, 0, -1}] // Flatten (* A332529 sequence *) %Y A332529 Cf. A001950, A054770, A214971, A284624. %K A332529 nonn,tabl,easy %O A332529 0,2 %A A332529 _Clark Kimberling_, Jun 15 2020 %E A332529 Definition corrected by _Harvey P. Dale_, Jun 14 2022