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Generalizing the work of Farahat-Higman on symmetric groups, we describe thestructures of the even centers Z_n of integral spin symmetric groupsuperalgebras, which lead to universal algebras termed as the spin FH-algebras.A connection between the odd Jucys-Murphy elements and the Catalan numbers isdeveloped and then used to determine the algebra generators of the spinFH-algebras and of the even centers Z_n.

The centers of spin symmetric group algebras and Catalan numbers