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We use Stirling number identities developed recently in number theory to showthat ratios among high energy string scattering amplitudes in the fixed angleregime can be extracted from the Kummer function of the second kind. Thisresult not only brings an interesting bridge between string theory andcombinatoric number theory but also sheds light on the understanding ofalgebraic structure of high energy stringy symmetry.

Stirling number Identities and High energy String Scatterings