// Moebius function function moebius(n) { m = 1; if (n != 1) { f = 2; do { if (n % (f * f) == 0) { m = 0; } else { if (n % f == 0) { m = -m; n /= f; } f++; } } while (f <= n && m != 0); } return m; } document.write("
| "); document.write(moebius(10 * t + u)); document.write(" | "); } document.write("