62133

Appears in sequences

• Consider the family of multigraphs enriched by the species of involutions. Sequence gives number of those multigraphs with n labeled edges.at n=6A099696
• Convolution of the (signless) central Lah numbers (A187535) and the central Stirling numbers of the second kind (A007820).at n=4A187662
• Number of nX3 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=6A201230
• Number of n X 7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=2A201234
• T(n,k)=Number of nXk 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=38A201235
• T(n,k)=Number of nXk 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=42A201235
• Number of Baxter matrices of size 3 X n.at n=18A347673