63713

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|>=|x-y|+|y-z|.at n=23A212574
• MM-numbers of labeled multigraphs spanning an initial interval of positive integers.at n=25A320459
• a(n) is the index where A387090(n) appears in A386482.at n=47A386484