A266639 a(n) = A252738(n) / A191555(n).
1, 1, 3, 675, 58604765625, 11092415260481715750835418701171875, 3137960908072825781252850621957535487873360037739990444983085932462881828541867434978485107421875
Offset: 1
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.