Primes whose SOD and that of their indices are both prime and equal (indices may not be prime, but their SOD must be prime).
A117477
Primes whose SOD and that of their indices are both prime and equal (indices may not be prime, but their SOD must be prime).
Terms
- a(0) =131a(1) =263a(2) =1039a(3) =1091a(4) =1301a(5) =1361a(6) =1433a(7) =2221a(8) =2441a(9) =2591a(10) =2663a(11) =2719a(12) =2803a(13) =3433a(14) =3631a(15) =4153a(16) =4357a(17) =4397a(18) =5507a(19) =5701a(20) =5741a(21) =5927a(22) =6311a(23) =6353a(24) =6553a(25) =6737a(26) =6827a(27) =6971a(28) =7013a(29) =7213
External references
- oeis: A117477