227799

Appears in sequences

• a(n) = (2 cos(Pi/15))^n + (2 cos(7 Pi/15))^n + (2 cos(11 Pi/15))^n + (2 cos(13 Pi/15))^n.at n=18A306603
• Numbers k such that k | A020696(k) and (k+1) | A020696(k+1).at n=2A355332