76755

Appears in sequences

• Numbers n such that the middle coefficient of the cyclotomic polynomial Phi_n(x) has a value not obtained for any smaller n.at n=34A095877
• Number of (1+1) X (n+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one.at n=13A231998
• a(n) = Product_{d|n, d>1} prime(A286622(d)-1).at n=62A305794
• a(n) = n*(2*n + 1)*(4*n + 1).at n=21A316224
• T(n,k) is the number of permutations of the multiset {1, 1, 2, 2, ..., n, n} with k occurrences of fixed pairs (j,j), where T(n,k), n >= 2, 0 <= k <= n-2 is a triangle read by rows.at n=18A375220