68876

Appears in sequences

• Number of unlabeled bisectable trees with 2n+1 nodes.at n=12A007098
• Antidiagonal sums of table A084287, in which the k-th row is the product of the k-th prime with the antidiagonals of the first k rows of the table.at n=16A084288
• Number of nX3 arrays containing 3 copies of 0..n-1 avoiding the pattern down-up in every row and equal-up in every column.at n=3A269645
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 avoiding the pattern down-up in every row and equal-up in every column.at n=18A269646
• Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern down-up in every row and equal-up in every column.at n=2A269648
• Number of integer partitions of n whose semi-sums do not cover an interval of positive integers.at n=44A367403