A081945 Numbers n such that n(n + 1) + 1 as well as n(n - 1) + 1 are both primes.

2, 3, 6, 15, 21, 78, 90, 111, 162, 168, 189, 246, 279, 288, 405, 435, 456, 531, 567, 762, 819, 960, 993, 1002, 1092, 1098, 1149, 1182, 1275, 1365, 1422, 1443, 1449, 1548, 1560, 1659, 1701, 1848, 1932, 1974, 2016, 2163, 2205, 2373, 2430, 2451, 2484, 2541