272432

Appears in sequences

• Number of 3 X n binary matrices up to row and column permutations.at n=22A002727
• 1045*6^n/27-513*2^(n-2)-2072*3^(n-3)+670*(-1)^n*3^(n-3)+254*(-1)^(n+1), n>1.at n=4A121804