49020928

Appears in sequences

• Expansion of (1+2*x) / (1-2*x)^4.at n=15A014483
• Sums of the squares of the elements in the subsets of the integers 1 to n.at n=16A087076
• Number of (n+2)X(n+2) 0..3 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=26A253017