100688

Appears in sequences

• Alkane (or paraffin) numbers l(8,n).at n=27A005995
• Number of reversible strings with n-1 beads of 2 colors. 5 beads are black. String is not palindromic.at n=26A032092
• One half of binomial coefficients C(2*n-4,5).at n=13A053132
• a(4n+k) = (k+1)*binomial(5n+k,n)/(4n+k+1), k=0..3.at n=26A118968
• a(n) = 3*binomial(5n+2,n)/(4n+3).at n=6A118970
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^3*A(-x)^2.at n=13A143546
• Number of n-element subsets of [n+5] having an even sum.at n=27A282081