26190337

Appears in sequences

• a(n) = (1+sqrt(3))^n + (-2)^n + (1-sqrt(3))^n + 1.at n=17A215502
• Numerator of 1/Pi^(4*n+3) * Sum_{k>0} (-1)^(k+1) / (k^(4*n+3) * sinh(Pi * k)).at n=4A330905