15090641domain: NPropertiesPrimalityPrimeyesAppears in sequencesFind the first (maximal) string of consecutive primes of length exactly n which alternate between 4*k+1 and 4*k+3 or 4*k+3 and 4*k+1 as in A002144(4*n+1) and A002145(4*n+3). The first element is a(n).at n=22A247384Prime numbersat n=976193