122868

Appears in sequences

• a(n) = (3*n*F(2n-1) + (3-n)*F(2n))/5 where F() = Fibonacci numbers A000045.at n=12A059502
• Averages of twin prime pairs that are sums of 5 consecutive averages of twin prime pairs.at n=30A160919
• Number of squarefree permutations of 1,...,n that are fixed under reverse-complement, up to symmetry.at n=18A238942