Least composite such that complementing one bit in its binary representation at a time produces exactly n primes.

A322743

Least composite such that complementing one bit in its binary representation at a time produces exactly n primes.

Terms

    a(0) =8a(1) =4a(2) =6a(3) =15a(4) =21a(5) =45a(6) =111a(7) =261a(8) =1605a(9) =1995a(10) =4935a(11) =8295a(12) =69825a(13) =268155a(14) =550725a(15) =4574955a(16) =13996605a(17) =12024855a(18) =39867135a(19) =398467245a(20) =1698754365a(21) =16351800465a(22) =72026408685a(23) =120554434875

External references