122149

Properties

Appears in sequences

• Primes of the form p^2 + p - 1 when p is prime.at n=26A053185
• Primes of the form 1 + prime(k) + (prime(k+1))^2, any k.at n=14A165613
• Centered 18-gonal (or octadecagonal) primes.at n=40A264825
• a(n) = A305312(n)/4 if A305312(n)is even and a(n) = (A305312(n) - 1)/4 if A305312(n) is odd, for n >= 1.at n=9A308687
• Number of wedged n-spheres in the homotopy type of the neighborhood complex of Kneser graph KG_{3,n}.at n=23A342737
• Number of non-knapsack integer partitions of n.at n=47A366754
• Prime numbersat n=11491