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 A122220 #25 Dec 29 2023 11:57:36 %S A122220 3,36,780,5880,88572,241332,1206864,2352276,7401768,29741124,44375136, %T A122220 128286252,237505128,316068060,538960656,1108217916,2109026508, %U A122220 2576018532,4522918884,6405013944,7566711048,12154372464,16347018324,24849064152,41648599776 %N A122220 a(n) = (prime(n)^6 - prime(n)^2)/20. %F A122220 From _Elmo R. Oliveira_, Jan 18 2023: (Start) %F A122220 a(n) = (A030516(n) - A001248(n))/20. %F A122220 a(n) = A138441(n)/10. %F A122220 a(n) = (A001248(n) * (A030514(n) - 1))/20. (End) %p A122220 A122220:=n->(ithprime(n)^6-ithprime(n)^2)/20: seq(A122220(n), n=1..40); # _Wesley Ivan Hurt_, Apr 14 2017 %t A122220 (#^6-#^2)/20&/@Prime[Range[30]] (* _Harvey P. Dale_, Jan 19 2011 *) %o A122220 (PARI) forprime(p=2,1e3,print1((p^6-p^2)/20", ")) \\ _Charles R Greathouse IV_, Jul 15 2011 %Y A122220 Cf. A138448, A030516, A001248, A138441, A030514. %K A122220 nonn,easy %O A122220 1,1 %A A122220 _Artur Jasinski_, Apr 16 2008