41728

Appears in sequences

• Related to Latin rectangles.at n=4A001624
• a(n) = 2^(2*n-1)*binomial(2*n,n) + 2^(4*n-1).at n=4A045952
• a(n) = (4*n^3 + 6*n^2 + 8*n + 6)/3.at n=31A100504
• Number of binary strings of length n with no substrings equal to 0001 0101 or 1010.at n=16A164472
• Number of (n+3) X (1+3) 0..1 arrays with no 4 X 4 subblock diagonal sum less than the antidiagonal sum.at n=0A258685
• T(n,k)=Number of (n+3)X(k+3) 0..1 arrays with no 4x4 subblock diagonal sum less than the antidiagonal sum.at n=0A258689
• Practical numbers q with q + 2 and q^2 + 2 both practical.at n=21A294225
• Integers m that satisfy tau(m) + omega(m) = #({phi(x) = m}).at n=23A305656
• a(n) is the unique number m such that A034460(m) = A357324(n).at n=14A357325
• Triangle read by rows. T(n, k) = numerator([x^k] R(n, n, x)), where R(n, k, x) = Sum_{u=0..k} ( Sum_{j=0..u} x^j * binomial(u, j) * (j + 1)^n ) / (u + 1).at n=18A362996