a(n) = permanent M_n where M_n is the n X n matrix m(i,j) = Catalan(i+j).

A278843

a(n) = permanent M_n where M_n is the n X n matrix m(i,j) = Catalan(i+j).

Terms

    a(0) =1a(1) =2a(2) =53a(3) =19148a(4) =97432285

External references