Let f_k(n) be the result of applying phi (the Euler totient function A000010) k times to n; a(n) = n*Product_{k=1..oo} f_k(n).
A291782
Let f_k(n) be the result of applying phi (the Euler totient function A000010) k times to n; a(n) = n*Product_{k=1..oo} f_k(n).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =8a(4) =40a(5) =12a(6) =84a(7) =64a(8) =108a(9) =80a(10) =880a(11) =96a(12) =1248a(13) =168a(14) =960a(15) =1024a(16) =17408a(17) =216a(18) =4104a(19) =1280a(20) =2016a(21) =1760a(22) =40480a(23) =1536a(24) =32000a(25) =2496a(26) =5832a(27) =2688a(28) =77952a(29) =1920
External references
- oeis: A291782