54688

Appears in sequences

• 2-automorphic numbers: final digits of 2*n^2 agree with n.at n=4A030984
• Dispersion of A016873, (5k+3), by antidiagonals.at n=38A191705
• (7*5^n+1)/2.at n=6A199309
• Number of (n+2)X(n+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.at n=3A253732
• Number of (n+2) X (4+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.at n=3A253736
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.at n=24A253740
• Expansion of g.f. A(x,y) satisfying x*y = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x,y)^(3*n) - 1/A(x,y)^(3*n+1)), as a triangle read by rows.at n=39A361550