Numbers at which the sum of the iterated exponential totient function (A331273) attains a record.

A331407

Numbers at which the sum of the iterated exponential totient function (A331273) attains a record.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =32a(4) =128a(5) =864a(6) =3456a(7) =7776a(8) =31104a(9) =279936a(10) =497664a(11) =1990656a(12) =4478976a(13) =17915904a(14) =62208000a(15) =97200000a(16) =559872000a(17) =874800000a(18) =1555200000a(19) =6220800000a(20) =13996800000a(21) =55987200000

External references