67730

Appears in sequences

• Pisot sequence T(2,9), a(n) = floor(a(n-1)^2/a(n-2)).at n=7A020728
• a(n) = 4394*n + 1820.at n=15A156636
• Triangle read by rows: T(n,k) is the number of set partitions of {1..3n} into n sets of 3 with k disjoint strings of adjacent sets, each being a contiguous set of elements.at n=41A334060
• Numbers k with Goldbach partitions (p,q) and (r,s) such that k | (p*q -1) and k | (r*s +1).at n=9A336584