A023214 Numbers n such that n and 4n + 5 both prime.

2, 3, 17, 23, 47, 59, 83, 101, 107, 113, 149, 167, 191, 233, 251, 257, 281, 311, 401, 443, 449, 467, 503, 521, 569, 593, 617, 647, 653, 677, 761, 827, 839, 857, 863, 881, 941, 947, 971, 1013, 1031, 1049, 1109, 1163, 1181, 1277, 1301, 1307, 1319, 1361, 1409, 1433