44885

Appears in sequences

• a(n) = (1/n!)*A001688(n).at n=13A094793
• Number of n X 2 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.at n=6A202982
• Number of nX7 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.at n=1A202987
• T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.at n=29A202988
• T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.at n=34A202988
• G.f.: Product_{k>=1} 1/(1-x^k)^(7*k).at n=7A255614
• Coefficient of x^n in Product_{k>=1} 1/(1-x^k)^(k*n).at n=7A255672
• Recurrence a(1) = 1, a(2) = 5; a(n) = (a(n-1) + a(n-2))/GCD(a(n-1),a(n-2)) + 1.at n=34A349576
• Number of distinct sums i^3 + j^3 + k^3 + l^3 for 1<=i<=j<=k<=l<=n.at n=34A374714