40261

Appears in sequences

• Expansion of 1/((1+3*x)*(1-4*x)).at n=8A053404
• Number of different partitions of the set {1, 2, ..., n} into an odd number of blocks such that each block contains at least 2 elements.at n=10A097762
• Smallest number m such that Sum_{k=1..m} 1/prime(k) >= n/6.at n=16A103599
• G.f. satisfies: A(x) = (1+x) * A(x^2)*A(x^3)*A(x^4)*...*A(x^n)*...at n=38A129373
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -2, a(1) = -1, a(2) = 2, a(3) = 1.at n=19A295853