20379

Appears in sequences

• Super-5 Numbers (5 * n^5 contains substring '55555' in its decimal expansion).at n=6A032745
• Expansion of 1/(x^k*(1-x-2*x^(k+1))) for k=9.at n=39A143452
• Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7.at n=8A252300
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.at n=36A252433
• Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.at n=8A252434
• Number of Fibonacci meanders of length n.at n=19A361575