47061

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 2143, 3421.at n=37A116842
• Triangle read by rows: T(n,k) (n >= 2, k >= 1) is the number of non-crossing connected graphs on n nodes on a circle such that the distance from a fixed node (root) to the next node is k. Rows are indexed 2,3,4,...; columns are indexed 1,2,3, ... .at n=30A143018
• Jacobsthal sequence A001045 convolved with A139251 (first differences of toothpick numbers).at n=14A160704
• Number of length 6+3 0..n arrays with some disjoint pairs in every consecutive four terms having the same sum.at n=7A247538
• Number of (n+1) X (2+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=5A250892
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=26A250898
• Number of (6+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=1A250904
• a(n) = n for n = 0..3; for n>3, a(n) = 4*a(n-1) + 3*a(n-2) + 2*a(n-3) + a(n-4).at n=9A258089
• Number of permutations of [n] avoiding {1324, 2143, 3421}.at n=12A294700