169680

Appears in sequences

• Expansion of 1/(1 + x - x^2 - 3*x^3 - x^4 + x^5 + x^6).at n=47A147592
• Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.at n=2A236078
• Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.at n=1A236079
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.at n=7A236082
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.at n=8A236082
• Number of essentially parallel oriented series-parallel networks with n labeled elements and without multiple unit elements in parallel.at n=6A339300
• E.g.f. A(x) satisfies A(x) = (1+x) * exp(x^2 * (1+x) * A(x)).at n=7A389818