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 A228475 Positive real root of 37*x^4+36*x^3+6*x^2-12*x-3. 0
 5, 1, 6, 5, 8, 7, 7, 2, 2, 1, 5, 4, 0, 5, 2, 6, 4, 7, 1, 2, 5, 3, 2, 9, 8, 8, 0, 7, 7, 4, 8, 5, 0, 5, 2, 4, 7, 8, 6, 3, 8, 5, 8, 8, 8, 8, 3, 4, 7, 7, 7, 5, 6, 9, 9, 3, 4, 9, 2, 7, 5, 8, 3, 1, 4, 9, 6, 6, 2, 6, 7, 5, 5, 1, 9, 2, 9, 4, 5, 0, 4, 9, 8 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A Soddyian triangle is a triangle whose outer Soddy circle has degenerated into a straight line. Its side lengths are related by the equation 1/sqrt(s-c)=1/sqrt(s-b)+1/sqrt(s-a) where the sides a<=b<=c and s is the semiperimeter. If the side lengths of such a triangle form an arithmetic progression 1, 1+d, 1+2d, where d is the common difference, then d = 0.5165877... and is the solution to the equation 37d^4+36d^3+6d^2-12d-3 = 0 such that 0

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Last modified November 18 17:49 EST 2018. Contains 317323 sequences. (Running on oeis4.)