68600

Appears in sequences

• Binomial matrix applied to A111418.at n=38A126791
• First differences of A160119.at n=31A163987
• Totally multiplicative sequence with a(p) = 7*(p+3) for prime p.at n=19A167326
• a(n) = binomial(2n,n)^3/(n+1).at n=4A186415
• Numbers with prime factorization p^2*q^3*r^3 where p, q, and r are distinct primes.at n=10A190106
• Achilles number whose largest proper divisor is also an Achilles number.at n=34A203662
• Least numbers k that can be expressed as k = a' + b', with k = a + b, in exactly n ways, where a' and b' are the arithmetic derivatives of a and b.at n=7A292362
• Numbers such that the list of exponents of their factorization is a palindromic list of primes.at n=14A322525
• Triangle read by rows where T(n,k) is the number of labeled simple connected graphs with n vertices and exactly k bridges.at n=31A327072
• Triangle read by rows. T(n, k) = binomial(n, k)^2 * CatalanNumber(k).at n=40A367178
• Intersection of A375055 and A376936.at n=30A378769
• Primitive coreful-infinitary abundant numbers: powerful numbers k for which A363331(k) > 2*k.at n=26A391505