-1526

Appears in sequences

• a(n)=det(M_n) where M_n is the n X n matrix m(i,j)=1 if sigma(i+j) is even, 0 otherwise.at n=21A096734
• Determinants of 2 X 2 matrices of non-overlapping blocks of 4 consecutive primes.at n=32A117027
• G.f.: A(x,y) = Sum_{n>=0} x^n * Product_{k=1..n} (k + x*y) / (1 + k*x*y), as a triangle read by rows.at n=13A231171
• Row sums of A291955.at n=46A291956
• Dirichlet inverse of A124859.at n=31A354359