Largest order of a solvable subgroup of the symmetric group S_n.

Terms

a(0) =1a(1) =2a(2) =6a(3) =24a(4) =24a(5) =72a(6) =144a(7) =1152a(8) =1296a(9) =2304a(10) =6912a(11) =82944a(12) =82944a(13) =165888a(14) =497664a(15) =7962624a(16) =15925248a(17) =47775744a(18) =191102976a(19) =191102976a(20) =573308928a(21) =1146617856a(22) =13759414272a(23) =13759414272a(24) =27518828544a(25) =82556485632