Group the natural numbers so that the product of the terms in each group + 1 is a prime: (1), (2), (3, 4), (5, 6), (7, 8, 9, 10, 11), (12), (13, 14, 15), (16), ... This is the sequence of such primes.
A073688
Group the natural numbers so that the product of the terms in each group + 1 is a prime: (1), (2), (3, 4), (5, 6), (7, 8, 9, 10, 11), (12), (13, 14, 15), (16), ... This is the sequence of such primes.
Terms
- a(0) =2a(1) =3a(2) =13a(3) =31a(4) =55441a(5) =13a(6) =2731a(7) =17a(8) =307a(9) =4037881a(10) =601a(11) =530122321a(12) =63606090241a(13) =115511761a(14) =91081a(16) =185137a(17) =3541a(18) =238267a(19) =1250895361a(20) =4831a(21) =5113a(22) =2370937801a(23) =79a(24) =292666711681
External references
- oeis: A073688