109668

Appears in sequences

• Fermat coefficients.at n=17A000971
• Number of irreducible alternating Euler sums of depth 6 and weight 6+2n.at n=34A011796
• a(n) = floor(binomial(n,5)/6).at n=40A011843
• a(n) = floor(n(n-1)(n-2)(n-3)/18).at n=39A011928
• Number of necklaces with 6 black beads and n-6 white beads.at n=35A032191
• Molien series for 3-D group X1.at n=35A037240
• a(n) = ceiling(binomial(n,6)/n).at n=40A053643
• a(n) = lcm(6n+2, 6n+4, 6n+6).at n=12A061506
• One half of A075178.at n=36A075179
• Fifth column (m=4) of (1,3)-Pascal triangle A095660.at n=36A095661
• Member k=6 of a family of generalized Catalan numbers.at n=5A130565
• Numbers Sum_(j=1..k) sigma(j) when Sum_(j=1..k) sigma(j) / sigma(k) is an integer.at n=3A168130
• Denominator of generalized Bernoulli number B_n^{(n-1)}.at n=34A260329
• Sum of squares of end-to-end distances for self-avoiding walks on the Manhattan lattice.at n=13A260777
• Zero together with the partial sums of A064412.at n=31A275112
• Number of 2 X 2 matrices with entries in {0,1,...,n} with determinant = permanent with no entries repeated.at n=39A280058
• Numbers k such that k*A001414(k)+1 is the square of a prime.at n=40A343141
• a(n) = binomial(n^2 + n - 1, n) / (n^2 + n - 1).at n=5A351501
• Number of perfect-powers x in the range 2^n <= x < 2^(n+1).at n=36A377435
• Number of subsets of 6 integers between 1 and n such that their sum is 0 modulo n.at n=34A381289