139080

Appears in sequences

• Number of step shifted (decimated) sequences using exactly five different symbols.at n=8A056379
• Number of primitive (aperiodic) step shifted (decimated) sequences using exactly five different symbols.at n=8A056389
• a(n) can be expressed as the difference of the squares of consecutive primes in just three distinct ways.at n=9A090783
• Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.at n=25A092004
• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives x numbers.at n=28A125490
• Multiplicative order of 2 in Z/mZ with m=A104017(n).at n=40A165139