223776

Appears in sequences

• a(n) = Sum_{k=1..n-1} k^3*sigma(k)*sigma(n-k).at n=11A000499
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=4.at n=9A050212
• a(n) = Sum_{k=0..n} binomial(n,k)*binomial(2^k,n).at n=5A134173
• Triangle read by rows: T(n, k) = binomial(n, k)/Beta(n+1, n-k+1) + binomial(n, n-k)/Beta(n+1, k+1).at n=30A156052
• Triangle read by rows: T(n, k) = binomial(n, k)/Beta(n+1, n-k+1) + binomial(n, n-k)/Beta(n+1, k+1).at n=33A156052
• Triangle T(n, k) = n! * (Harmonic number(n-k) - Harmonic number(k)), read by rows.at n=48A157525
• Number of (n+1)X5 0..2 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=13A207046
• Number of (n+1) X 6 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly one clockwise edge increases.at n=12A207047