42476

Appears in sequences

• Bond percolation series for 4.8 (bathroom tile) lattice.at n=31A120553
• a(n) = 2*a(n-1) + a(n-2) + a(n-3) + a(n-4), a(-2)=0, a(-1)=0, a(0)=1, a(1)=1.at n=12A190139
• Number of (n+1)X(2+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.at n=3A253518
• Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.at n=1A253520
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.at n=11A253524
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically.at n=13A253524
• Number of compositions of n whose run-lengths cover an initial interval of positive integers.at n=17A329766
• G.f. A(x) = Sum_{n>=0} a(n)*x^n satisfies: [Sum_{n>=0} x^n/(1 - x^(n+1))]^4 = Sum_{n>=0} a(n)*x^n/(1 - x^(n+1))^4.at n=19A341375
• Perimeters of more than one primitive 120-degree integer triangle.at n=35A350047
• Numbers k such that k + A224787(k) is a square.at n=21A386640