164935

Appears in sequences

• Expansion of (1 + 10*x + 20*x^2 + 10*x^3 + x^4)/(1-x)^5.at n=17A160747
• Number of (n+6)X7 0..1 matrices with each 7X7 subblock idempotent.at n=1A224581
• Number of (n+6)X8 0..1 matrices with each 7X7 subblock idempotent.at n=0A224582
• T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=1A224588
• T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=2A224588