81708

Appears in sequences

• Matrix square of triangle V = A136230, read by rows.at n=23A136234
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and elements alternately strictly increasing and strictly decreasing.at n=32A200058
• Number of ways to choose a partition of each part of a strict composition of n.at n=15A336342
• Triangle read by rows: Number of walks from (0,0) to (3n,3k) on the square lattice with up and right steps where squares (x,y)=(1,1) mod 3 or (x,y)=(2,2) mod 3 are not entered.at n=33A348595