394240

Appears in sequences

• Sextuple factorial numbers: Product_{k=0..n-1} (6*k+4).at n=5A049308
• Sextuple factorials, 6-factorials, n!!!!!!, n!6.at n=28A085158
• Number of refactorable numbers (A033950) <= 10^n.at n=7A111291
• Denominator of Sum_{k=0..n} 1/k!!.at n=12A143383
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 214", based on the 5-celled von Neumann neighborhood.at n=19A286737
• Squared area of quadrilateral with sides prime(n), prime(n+1), prime(n+2), prime(n+3) of odd primes configured as a cyclic quadrilateral. Sequence index starts at n=2 to omit the even prime.at n=6A330496
• a(n) is the least integer that can be expressed as the difference of two octagonal numbers in exactly n ways.at n=15A334037