201602

Appears in sequences

• Numbers that are both 1 + square of a prime and twice a prime.at n=18A259979
• a(n) = Sum_{k=1..n} k^2 * (k+1)!.at n=6A280556
• Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1's.at n=4A295600
• Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1s.at n=4A295603
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2, 3 or 4 1s.at n=40A295606