Multimagic square 36, 100, ... Value for Trimagic squares 1, 50, 675, 4624, ... Similarly the tetramagic sequence 4-Power 0, 1, 16, 81, 256, 625, 1296, ... Sum of 4-Power 0, 1, 17, 98, 354, 979, 2275, ... Sums for Tetramagic squares 0, 1, 177, ... The first known bimagic square has order 8 and magic constant 260 and a bimagic constant of 11180. It has been conjectured by Bensen and Jacoby that no nontrivial bimagic squares of order less than 8 exist. This was shown for magic squares containing the elements 1 to "n" by Boyer and Trump. However, J. R.
Virginia State Route 256 Virginia State Route 256 State Route 256 (SR 256) is a primary state highway in the U.S. state of Virginia. Known for most of its length as Weyers Cave Road, the state highway runs from U.S. Route 11 (US 11) near Weyers Cave east to US 340 in Grottoes. SR 256 connects Interstate 81 (I-81) with Weyers Cave in northern Augusta County and Grottoes, which is home to Grand Caverns, in southeastern Rockingham County. SR 256 begins at an intersection with US 11 (Lee Highway) west of Weyers Cave. The state highway heads east as two-lane Weyers Cave Road, which