1285608

Appears in sequences

• a(1) = 6; for n>1, a(n) = prime(n)*(prime(n)^2 - 1)/2.at n=32A117762
• Half of product of three numbers: n-th prime, previous and following number.at n=32A127918
• 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=22A216480
• Primitive non-solvable numbers: elements of A056866 not divisible by any earlier term.at n=17A257146