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 A374927 #20 Aug 16 2024 09:27:54 %S A374927 1,1,1,4,9,16,25,64,121,256,441,1024,1849,4096,7225,16384,29241,65536, %T A374927 116281,262144,466489,1048576,1863225,4194304,7458361,16777216, %U A374927 29822521,67108864,119311929,268435456,477204025,1073741824,1908903481,4294967296,7635439161 %N A374927 a(n) = A135318(n)^2. %C A374927 A374098 terms swapped by pairs. %H A374927 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0,3,0,6,0,-8). %F A374927 a(2*n) = A139818(n+1). %F A374927 a(2*n+1) = 4^n = A000302(n). %F A374927 a(n) = 3*a(n-2) +6*a(n-4) -8*a(n-6). %Y A374927 Cf. A000302, A112387, A135318, A139818, A374098. %K A374927 nonn,easy %O A374927 0,4 %A A374927 _Paul Curtz_, Jul 24 2024