123747

Appears in sequences

• Exactly 6 digits from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a prime.at n=6A032696
• a(n) is the number of terms in the expansion of (x+y+z)*(x^2+y^2+z^2)*(x^3+y^3+z^3)*...*(x^n+y^n+z^n).at n=30A086796