65188
domain: N
Appears in sequences
- (1/2)*(n^2+n+2)*(n^2+3*n+1).at n=18A058310
- Number of bridged bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).at n=10A121332
- a(n) = smallest number k such that three consecutive prime numbers prime(n), prime(n+1) and prime(n+2) are divisors of k, k+1 and k+2 respectively.at n=13A180095
- Number of permutations of 3 indistinguishable copies of 1,...,n such that there are exactly j numbers between the first and the third copy of j and floor(j/2) numbers between the first and the second or between the second and the third copy of j.at n=12A320392