1817046

Appears in sequences

• Trails of length n on hexagonal lattice.at n=9A006818
• a(n) = (n+1)*binomial(n+6,6).at n=17A027818
• a(n) = binomial(n+7, 7)*(n+4)/4.at n=17A053347
• a(n) = binomial(3*n,n)*(5*n+2)/(2*n+1).at n=8A249691