19254

Appears in sequences

• Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n edges.at n=5A098342
• Number of (n+1) X (3+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.at n=4A253451
• Number of (n+1) X (5+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.at n=2A253453
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.at n=23A253456
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.at n=25A253456
• Partial sums of A253090.at n=38A255603
• Number of real integers in n-th generation of tree T(i) defined in Comments.at n=18A274160
• Number of even entries in the character table of the symmetric group S_n.at n=15A335686