/* XPM */
static char const * equation[] = {
/* width height num_colors chars_per_pixel */
"    20    20        3            1",
/* colors */
". c #bebebe",
"# c #000000",
"a c #5151fb",
/* pixels */
"....................",
"....................",
"....................",
"...##############...",
"....................",
"...##############...",
"....................",
"....................",
".......aaaaaa.......",
".......a....a.......",
".......a....a.......",
".......aaaaaa.......",
"....................",
"....................",
"...##############...",
"....................",
"...##############...",
"....................",
"....................",
"...................."
};