134033domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 10*p-1, 10*p-3, 10*p-7 and 10*p-9 are all prime.at n=32A243408Numbers of the form 7^x + y^7 with x, y >= 0.at n=40A250715Primes of the form 7^x + y^7 with x, y > 0.at n=2A250844Numbers of the form a^6 + b^7, with integers a, b > 0.at n=33A303376Prime numbersat n=12497