a(n) is the number of solutions to x^y == y^x (mod p) where 0 < x,y <= p^2 - p and p is the n-th prime.
A355069
a(n) is the number of solutions to x^y == y^x (mod p) where 0 < x,y <= p^2 - p and p is the n-th prime.
Terms
- a(0) =2a(1) =14a(2) =104a(3) =366a(4) =1550a(5) =3048a(6) =6272a(7) =9774a(8) =14894a(9) =34664a(10) =48750a(11) =84456a(12) =108320a(13) =128814a(14) =128846a(15) =209768a(16) =255374a(17) =424680a(18) =479886a(19) =563150a(20) =700704a(21) =782574a(22) =712334a(23) =1068320a(24) =1614336a(25) =1649000a(26) =1721454a(27) =1527566a(28) =2299752a(29) =2328704
External references
- oeis: A355069