Numbers k of the form p_1^p_m * p_2^p_(m-1) * ... * p_(m-1)^p_2 * p_m^p_1 for increasing primes p_i.

A334633

Numbers k of the form p_1^p_m * p_2^p_(m-1) * ... * p_(m-1)^p_2 * p_m^p_1 for increasing primes p_i.

Terms

    a(0) =1a(1) =4a(2) =27a(3) =72a(4) =800a(5) =3125a(6) =6272a(7) =21600a(8) =30375a(9) =169344a(10) =247808a(11) =750141a(12) =823543a(13) =1384448a(14) =6690816a(15) =19600000a(16) =37380096a(17) =37879808a(18) =189267968a(19) =190512000a(20) =235782657a(21) =774400000a(22) =1022754816a(23) =1313046875a(24) =2344190625a(25) =3502727631a(26) =4326400000a(27) =4437573632a(28) =5110235136a(29) =118374400000

External references