530613

Appears in sequences

• Number of (n+5)X8 0..2 matrices with each 6X6 subblock idempotent.at n=9A224631
• a(n) = a(n-1) + 3*a(n-2) - 2*a(n-3) - 2*a(n-4), where a(0) = 1, a(1) = 2, a(2) = 3, a(3) = 4.at n=29A295619