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 A356645 #6 Aug 19 2022 13:52:49 %S A356645 -3,-7616,-645084,-14610432,-171983600,-1414609920,-7628945436, %T A356645 -27222867968,-112609506987,-386562553600,-855436691900, %U A356645 -2834434031616,-6834860379504,-16036772433920,-33117544971900,-69394306695168,-89395660818176,-249634755002304,-352295159176476,-768651312742400 %N A356645 a(n) = tau(n)^2 - 4*n^11 where tau is Ramanujan's tau function A000594. %H A356645 Guillaume Duval, <a href="https://arxiv.org/abs/2208.08899">Théorème de Chebotarev et Congruences de suites récurrentes linéaires, liens avec les algorithmes de factorisations sur Fp</a>, arXiv:2208.08899 [math.NT], 2022. See Corollaire 20 p. 12. In French. %H A356645 J. P. Serre, <a href="http://www.numdam.org/item/SDPP_1967-1968__9_1_A13_0/">An interpretation of some congruences concerning Ramanujan's tau function</a>, Séminaire Delange-Pisot-Poitou. Théorie des nombres, tome 9, no 1 (1967-1968), exp. no 14, pp. 1-17. %t A356645 a[n_] := RamanujanTau[n]^2 - 4*n^11; Array[a, 20] (* _Amiram Eldar_, Aug 19 2022 *) %o A356645 (PARI) a(n) = ramanujantau(n)^2 - 4*n^11; \\ _Michel Marcus_, Aug 19 2022 %Y A356645 Cf. A000594, A008455. %K A356645 sign %O A356645 1,1 %A A356645 _Michel Marcus_, Aug 19 2022