543004

Appears in sequences

• Alkane (or paraffin) numbers l(8,n).at n=39A005995
• Number of reversible strings with n-1 beads of 2 colors. 5 beads are black. String is not palindromic.at n=38A032092
• One half of binomial coefficients C(2*n-4,5).at n=19A053132
• a(n) = 3*binomial(7*n+3, n)/(7*n+3).at n=6A233833
• Number of n-element subsets of [n+5] having an even sum.at n=39A282081
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/6)} a(6*k) * a(n-1-6*k).at n=38A386380