20 Jun
2010
20 Jun
'10
9:25 p.m.
8, 56, 996, 1680, 5236, 280, 28, 224, 448, 749196, 728, 980, 420, 112, 1708, 56, 112, 56, 308, 252, 532, 84, 2156, 28, 84, 280, 29260, 140, 6454336, 3220, ... = period of the sequence x[n+1]:= floor(2 cos(2 pi/7) x[n]) - x[n-1], x[0]:= cosh(k)^2, x[1]:= sinh[k]^2. The pi*<rational> suppresses its natural tendency to grow like x0^2+y0^2. --rwg