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 A177963 #10 Jun 28 2023 12:01:31 %S A177963 1,4,576,1625702400,13168189440000,7600054456551997440000, %T A177963 437763136697395052544000000,5919012181389927685417441689600000000, %U A177963 162644002617632464507038883409628607021056000000000000 %N A177963 a(n) = ((prime(n) - 3)!)^2. %C A177963 Except for the first three terms, sqrt(a(n)/400) is an integer. For all terms a(n), sqrt(a(n+1)/a(n)) is an integer. %H A177963 Nathaniel Johnston, <a href="/A177963/b177963.txt">Table of n, a(n) for n = 2..50</a> %p A177963 A177963 := proc(n) return factorial(ithprime(n)-3)^2: end: seq(A177963(n),n=2..10); # _Nathaniel Johnston_, May 28 2011 %t A177963 ((Prime[Range[2,10]]-3)!)^2 (* _Harvey P. Dale_, Jun 28 2023 *) %Y A177963 Cf. A177926. %K A177963 nonn,easy %O A177963 2,2 %A A177963 _Giovanni Teofilatto_, May 16 2010 %E A177963 Offset corrected by _Nathaniel Johnston_, May 28 2011