267168

Appears in sequences

• Number of invertible 2 X 2 matrices mod n.at n=22A000252
• Number of 2 X 2 matrices with entries mod n and nonzero determinant.at n=22A005353
• a(n) = n*(n-1)*(n-2)^2.at n=22A047927
• Orders of the finite groups GL_2(K) when K is a finite field with q = A246655(n) elements.at n=12A059238
• Sum of all parts of all partitions of n.at n=32A066186
• Number of the Lipschitz quaternions in a reduced system modulo n.at n=22A227499
• Order of GL_2(p), the general linear group over F_p, where p runs through the primes.at n=8A244509
• Order of the finite groups GL(m,q) [or GL_m(q)] in increasing order as q runs through the prime powers.at n=16A335384
• Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = 5.at n=7A380928