1,1

This is an equation related to a beam clamped at left and simply supported at right: tan(x) = tanh(x). The first three solutions are: 3.9266 (this sequence), 7.0686 (A076421) and 10.21 (A076422).

Table of n, a(n) for n=1..105.

Z. Guede, I. Elishakov, A fifth-order polynomial that serves as both buckling and vibration mode of an inhomogeneous structure, Chaos, Solitons and Fractals 12 (7) (2001) 1267-1298.

tan(x) = tanh(x), x = 3.9266...

Cf. A076421, A076422.

Sequence in context: A010780 A309275 A179655 * A091473 A019675 A050129

Adjacent sequences: A076417 A076418 A076419 * A076421 A076422 A076423

easy,nonn,cons

Zak Seidov, Oct 10 2002

approved