178920

Appears in sequences

• Orders of noncyclic simple groups (without repetition).at n=35A001034
• a(n) = lcm(3n+1, 3n+2, 3n+3).at n=23A061495
• a(1) = 6; for n>1, a(n) = prime(n)*(prime(n)^2 - 1)/2.at n=19A117762
• Half of product of three numbers: n-th prime, previous and following number.at n=19A127918
• Orders of simple groups which are non-cyclic and non-alternating.at n=32A137863
• Product of tribonacci numbers: a(n) = A000073(n+2)*A000213(n).at n=11A200543
• E.g.f.: Limit_{N->oo} [ Sum_{n>=0} (N + n*y)^(2*n) * (x/N)^n/n! ]^(1/N).at n=25A266488
• a(n) = 2n*(n+1)*(2n+1).at n=35A300758
• The orders, with repetition, of the non-cyclic finite simple groups that are subquotients of the sporadic finite simple groups.at n=28A330585
• 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=29A334884
• Orders of the groups PSL(m,q) in increasing order as q runs through the prime powers (without repetitions).at n=28A334994
• Orders of the groups PSL(m,q) in increasing order as q runs through the prime powers (with repetitions).at n=31A335000
• Numbers k such that A011772(k) > A344878(k) and A011772(k) is a divisor of A344875(k).at n=43A344595
• Irregular triangle read by rows: T(n,k) is the number of endofunctions on [n] whose fourth-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-3).at n=22A350276
• Orders of the finite groups PSL_2(K) when K is a finite field with q = A246655(n) elements.at n=28A352806
• E.g.f. satisfies A(x) = exp(x^2 * A(x)^2 / (1 - x)).at n=7A376494