33604

Appears in sequences

• Restricted permutations.at n=16A000496
• Partial sums of A014138.at n=9A014143
• Triangle T(n,k) giving number of (<=2)-covers of an n-set with k blocks.at n=27A094573
• Triangle read by rows: T(n,k) is the number of Dyck n-paths with k large components, 0 <= k <= n/2.at n=37A097877
• Pairs of numbers a, b for which sigma*(a)=b and sigma(b)-b-1=a, where sigma*(n) is the sum of the anti-divisors of n.at n=11A192292
• Triangle T(n,k) = coefficient of x^n in expansion of ((1-sqrt(1-4*x))/((1-x)*2))^k = sum(n>=k, T(n,k) * x^n).at n=56A200965
• Numbers n such that 2*n + {3, 5, 9, 11} are all primes.at n=28A222960
• Number of nX3 0..2 arrays with no more than floor(nX3/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=3A223121
• T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=18A223126
• Number of 4Xn 0..2 arrays with no more than floor(4Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=2A223129
• Number of length n+3 0..3 arrays with no pair in any consecutive four terms totalling exactly 3.at n=8A246474
• The fixed points of A355647.at n=12A355648