307328

Appears in sequences

• Denominator of sum of -5th powers of divisors of n.at n=27A017674
• Seventh column of triangle A067410.at n=5A067414
• Let q(p) be the smallest prime greater than the prime p. A positive integer n is included in this sequence if n+1 is divisible by q(p) for each prime p dividing n.at n=39A163619
• a(n) = ceiling((n+1)^4/2).at n=27A171714
• a(n) = product of non-powerful divisors d of n.at n=55A183103
• a(n) = product of divisors of n that are not perfect powers.at n=55A183105
• Number of compositions of odd natural numbers into 4 parts <= n.at n=27A191903
• Triangle by rows T(n,k), showing the number of meanders with length (n+1)*3 and containing (k+1)*3 L's and (n-k)*3 R's, where L's and R's denote arcs of equal length and a central angle of 120 degrees which are positively or negatively oriented.at n=41A194595
• Number of 2 X 2 matrices with all terms in {0,1,...,n} and even trace.at n=27A210378
• Number of 2 X 2 matrices with all terms in {0,1,...,n} and odd trace.at n=27A210379
• The greedy sequence of real numbers at least 1 that do not contain any 7-term geometric progressions with integer ratio.at n=9A235058
• Numbers k such that k^3 is the sum of two nonzero 4th powers.at n=15A291849
• Numbers n with exactly three times as many factorizations (A001055) as strict factorizations (A045778).at n=6A331198
• Quartic-full (4-full) Achilles numbers.at n=23A391011