430081

Properties

Appears in sequences

• Crystal ball sequence for the A3 x A3 lattice.at n=9A143009
• Primes p such that (p+3839)/3840 is also a prime number.at n=12A162141
• Number of 2 X 2 matrices having all terms in {1,...,n} and even determinant.at n=28A211064
• a(n) = Sum_{d|n} d^(1 + 2*n/d).at n=15A294567
• Number of von Neumann regular elements in the ring of 2 X 2 matrices over Z_n.at n=31A295071
• a(n) = A143007(3*n,n).at n=3A363865
• Prime numbersat n=36169