89045

Appears in sequences

• Positive integers k such that (k+1)^4 has a divisor congruent to -1 modulo k.at n=49A350916
• a(0) = 5, a(1) = 5, and a(n) = 4*a(n-1) - a(n-2) - 4 for n >= 2.at n=9A350920