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 A334183 #14 Dec 21 2024 01:02:02 %S A334183 1,843,2226851,7009284232,23313951730593,79684937704014787, %T A334183 276820366633357961907,971684488369988888850993, %U A334183 3433809783046699326165318697,12187832583695135440208385490411,43381711462091769247169214041784216,154696550169813236996441805153918153313 %N A334183 Number of dimer tilings of a 2*n x 14 Moebius strip. %F A334183 a(n)^2 = 4^n * Resultant(U_{2*n}(x/2), T_{14}(i*x/2)), where T_n(x) is a Chebyshev polynomial of the first kind, U_n(x) is a Chebyshev polynomial of the second kind and i = sqrt(-1). %t A334183 a[n_] := 2^n * Sqrt[Resultant[ChebyshevU[2*n, x/2], ChebyshevT[14, I*x/2], x]]; Array[a, 12, 0] (* _Amiram Eldar_, May 04 2021 *) %o A334183 (PARI) {a(n) = sqrtint(4^n*polresultant(polchebyshev(2*n, 2, x/2), polchebyshev(14, 1, I*x/2)))} %Y A334183 Column 7 of A103997. %Y A334183 Column 14 of A334178. %K A334183 nonn %O A334183 0,2 %A A334183 _Seiichi Manyama_, Apr 17 2020