Number of permutations s_1,s_2,...,s_n of 1,2,...,n such that for all j=1,2,...,n, Sum_{i=1..j} s_i is not a prime.
A291504
Number of permutations s_1,s_2,...,s_n of 1,2,...,n such that for all j=1,2,...,n, Sum_{i=1..j} s_i is not a prime.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =3a(5) =8a(6) =48a(7) =206a(8) =1838a(9) =13336a(10) =133764a(11) =1081556a(12) =11046816a(13) =108196128a(14) =1555323224a(15) =16279258144a(16) =289771660328
External references
- oeis: A291504