51888

Appears in sequences

• Orders of noncyclic simple groups (without repetition).at n=25A001034
• a(n) = lcm(3n+1, 3n+2, 3n+3).at n=15A061495
• a(n) = binomial(2*n,n) mod ((n+1)*(n+2)*(n+3)).at n=44A065345
• Number of edges in LCM of graphs K_n and C_4.at n=46A098585
• Indices of primes in sequence defined by A(0) = 83, A(n) = 10*A(n-1) - 17 for n > 0.at n=11A101058
• Orders of non-cyclic simple groups (with repetition).at n=26A109379
• a(1) = 6; for n>1, a(n) = prime(n)*(prime(n)^2 - 1)/2.at n=14A117762
• Half of product of three numbers: n-th prime, previous and following number.at n=14A127918
• Orders of simple groups which are non-cyclic and non-alternating.at n=22A137863
• a(n) = A159553(n)/n.at n=17A159554
• a(n) = ((4+3*sqrt(2))*(4+sqrt(2))^n + (4-3*sqrt(2))*(4-sqrt(2))^n)/4.at n=6A164034
• Primitive non-solvable numbers: orders of non-solvable groups such that all groups with order a proper divisor of that order are solvable.at n=12A216480
• Number of Motzkin n-paths with two kinds of level steps both of which are final steps.at n=15A253918
• Integer areas of integer-sided triangles where at least one of the three altitudes is of prime length.at n=29A256579
• Primitive non-solvable numbers: elements of A056866 not divisible by any earlier term.at n=10A257146
• Numbers n such that sigma(sigma(n)) = sigma(sigma(n)-n) + sigma(n); that is, f(g(n)) = g(f(n)) where f = A000203 and g = A001065.at n=2A291881
• a(n) = 2n*(n+1)*(2n+1).at n=23A300758
• Exponent of the group SL(2, Z_n).at n=46A327569
• Order of the non-isomorphic groups PSL(m,q) [or PSL_m(q)] in increasing order as q runs through the prime powers.at n=23A334884
• Orders of the groups PSL(m,q) in increasing order as q runs through the prime powers (without repetitions).at n=22A334994