989184

Appears in sequences

• Expansion of 1/((1-4x)(1-8x)(1-12x)).at n=5A019677
• Stirling2 triangle with scaled diagonals (powers of 4).at n=30A075499
• E.g.f.: A(x) satisfies: cos(A(x)) + sin(A(x)) = 1/(cos(x) - sin(x)).at n=6A318005
• E.g.f. A = A(x,m) satisfies: cn(A + x, m) + sn(A - x, m) = 1, where sn(x,m) and cn(x,m) are Jacobi elliptic functions with parameter m, as an irregular triangle of coefficients read by rows.at n=12A319145