125976

Appears in sequences

• Expansion of 1/(1-x^2-x^3-x^4-x^5).at n=30A013982
• Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=3A233787
• Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=2A233788
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)).at n=17A233792
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)).at n=18A233792
• Number x such that sigma(x) = usigma(x) + (-1)sigma(x), where sigma(x) is the sum of divisors of x (A000203), usigma(x) is the sum of unitary divisors of x (A034448) and (-1)sigma(x) is defined in A049060.at n=8A258106
• Number of compositions (ordered partitions) of n into prime power parts (not including 1) not greater than sqrt(n).at n=30A369221
• G.f. satisfies A(x) = x + Product_{n>=2} A(x^n) with A(0) = 1.at n=51A385635