176936

Appears in sequences

• Number of inequivalent n-state 2-input 2-output automata with respect to input and output permutations.at n=3A054732
• a(n) = min{ m : sum_{n <= i <= m} 1/p_i > 1}, where p_i is the i-th prime = A000040(i).at n=46A092325
• Number of (n+1)X(n+1) 0..2 arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=7A187701