-8648

Appears in sequences

• Coordination sequence for octagonal tiling is a(n) + A103908(n)*sqrt(2).at n=23A103909
• Expansion of theta_4/theta_3 in powers of q.at n=17A189925
• Expansion of (phi(-q) / phi(q^2))^2 in powers of q where phi() is a Ramanujan theta function.at n=17A210067