136874
domain: N
Appears in sequences
- Number of (n+7)X(n+7) 0..1 matrices with each 8X8 subblock idempotent.at n=6A224589
- Number of (n+7) X 14 0..1 matrices with each 8 X 8 subblock idempotent.at n=6A224596
- a(n) = 3*a(n-1) - 3*a(n-2) + 3*a(n-3) - 3*a(n-4) + a(n-5) for n >= 1, where a(0) = 2, a(1) = 4, a(2) = 7. a(3) = 11, a(4) = 20.at n=18A288380