-1782

Appears in sequences

• a(n) = (3^n/n!)*Product_{k=0..n-1} (3*k - 1).at n=5A004990
• Riordan array ((1-x)/(1+x), x/(1+x)^2).at n=49A110162
• Scaled coefficient table for Chebyshev polynomials 2*T(2*n, sqrt(x)/2) (increasing even scaled powers, without zero entries).at n=49A127677
• Triangular sequence produced from symmetrical power of two matrices of the general type: M={{1, 2, 4, 8}, {2, 1, 2, 4}, {4, 2, 1, 2}, {8, 4, 2, 1}}.at n=22A129964
• Triangle read by rows, characteristic polynomials of Cartan ring matrices.at n=50A152060
• Expansion of (1-3*x+x^3)/(1-2*x-x^2+x^3).at n=11A199853
• Coefficient triangle for the square of the monic integer Chebyshev T-polynomials A127672.at n=49A217476
• Coefficient array for the third power of the monic integer Chebyshev polynomials 2*T(2*n,x/2) as a function of x^2.at n=16A219236
• Coefficient array for the cube of Chebyshev's C polynomials.at n=59A220667
• Coefficient array for powers of x^2 of the square of Chebyshev's C(2*n+1,x)/x =: tau(n,x) polynomials.at n=19A220669
• Linear recurrence sequence with infrequent pseudoprimes, a(n) = -a(n-1) + a(n-2) - a(n-3) + a(n-5), with initial terms (5, -1, 3, -7, 11).at n=13A225984
• Expansion of r(q)^3 / r(q^3) in powers of q where r() is the Rogers-Ramanujan continued fraction.at n=33A285628
• G.f. A(x,y) = Sum_{-oo..+oo} (x - y^n)^(n+1), as a flattened rectangular array of coefficients T(n,k) of x^n * y^(k*(n+k-1)) in A(x,y) for n>=1.at n=96A293600
• G.f. A(x) satisfies: A(x) = A(x^3 - x^5)/x^2.at n=23A350479
• Expansion of (1 - 9*x*(1 - 9*x)^(2/3))^(2/3).at n=6A377263
• G.f. A(x) satisfies A(x) = (1 - 9*x*A(x))^(2/3).at n=6A377269