-1053

Appears in sequences

• Expansion of Product_{k>=1} (1 - x^k)^9.at n=21A010817
• Expansion of 1/(3*x^2 - 3*x + 1)^2.at n=8A115052
• Sequence is identical to its third differences in absolute value: a(0), a(1), a(2), a(2n+1)=3a(2n)-3a(2n-1)+2a(2n-2), a(2n+2)=3a(2n+1)-3a(2n), with a(0)=a(1)=0, a(2)=1.at n=21A131665
• Expansion of Product_{n >= 1} (1+q^(2*n-1))/((1-q^(4*n))*(1+q^(4*n-2))).at n=47A144558
• Expansion of (1 + sqrt(1-4*x))/(2-4*x).at n=8A158499
• Diagonal sums of number triangle A185962.at n=31A185964
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j)=min(3i-2,3j-2) (A204028).at n=21A204029
• Values of n such that L(15) and N(15) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=16A227518
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 2/(1 + k*x + sqrt(1 + 2*k*x + k*(k+4)*x^2)).at n=62A307968
• a(1) = 1, then add, subtract and multiply 2, 3, 4; 5, 6, 7; ... in that order.at n=12A362271