28840

Appears in sequences

• 8 times octagonal numbers: 8*n*(3*n-2).at n=35A153808
• Position of 5^n in A051037 (5-smooth numbers).at n=36A188427
• Number of (n+1)X(2+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.at n=2A234771
• Number of (n+1)X(3+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.at n=1A234772
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.at n=7A234777
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both.at n=8A234777
• Numbers n such that 39^n + 2 is prime.at n=13A247959
• a(n) = A008412(n-1) + A008412(n-2) for n>1, a(0)=0, a(1)=1.at n=19A287324