a(n) = floor(n/2)^floor(n/3).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =9a(5) =9a(6) =16a(7) =64a(8) =125a(9) =125a(10) =1296a(11) =1296a(12) =2401a(13) =16807a(14) =32768a(15) =32768a(16) =531441a(17) =531441a(18) =1000000a(19) =10000000a(20) =19487171a(21) =19487171a(22) =429981696a(23) =429981696a(24) =815730721a(25) =10604499373a(26) =20661046784a(27) =20661046784