146797

Appears in sequences

• Number of 4-ary rooted trees with n nodes and height at most 4.at n=31A036609
• Number of 4-ary rooted trees with n nodes and height exactly 4.at n=31A036628
• Number of solenoidal flows (flow in = flow out) in a 3 X 3 square array with integer velocities -n .. n.at n=12A068722
• Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -12 .. 12.at n=2A068737
• Number of (w,x,y,z) with all terms in {1,...,n} and w > |x-y| + |y-z|.at n=25A212674