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Formel zum Bild "Der Tschebyschew - 16 - Ball von Hermann Bauer": T16(x)*E16(y)*T16(z) = 0 mit T16(u) = 32768u^16-131072u^14+212992u^12-180224u^10+84480u^8-21504u^6+2688u^4-128u^2+1