30233088

Appears in sequences

• Denominator of sum of -10th powers of divisors of n.at n=5A017684
• Denominator of sum of -11th powers of divisors of n.at n=5A017686
• Ratios of successive terms are 3, 2, 3, 2, 3, 2, 3, 2, ...at n=19A026532
• a(n) = 6*a(n-2), starting with 1, 3, 9.at n=19A026565
• Number of 6-ary Lyndon words with trace 1 mod 6.at n=11A054666
• Fifth column of triangle A055858.at n=8A055863
• Expansion of exp(3*x)*cosh(3*x).at n=10A081341
• For n>3, a(n) = smallest number divisible by exactly n-2 previous terms; a(n)=n for n<=3.at n=37A084391
• a(n)=Product{k=0..n, 1+2^A010060(k)}/2.at n=19A101652
• a(n) = 3*6^n.at n=9A169604
• Numbers expressible as A*B^A in two or more different ways, with A, B > 1.at n=15A171606
• a(n) = 648 * n^6.at n=6A185270
• Denominators of reduced coefficients in expansion of e.g.f. for operads for alia algebras.at n=24A220435
• Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=6A236991
• Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=1A236996
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=29A236997
• Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 6.at n=5A264703
• T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 6.at n=33A264704
• Numbers k such that k^4 is the sum of two positive 5th powers.at n=18A291852
• Base-6 complementary numbers: n equals the product of the 6 complement (6-d) of its base-6 digits d.at n=26A298976