636417

Appears in sequences

• Automorphic numbers: n^2 ends with n in base 6.at n=14A237583
• This sequence and A259987 are base-6 analogs of A007185 and A016090, written in base 10.at n=7A259986
• a(n) = Sum_{k=0..floor(n/4)} (k+1) * 2^k * 3^(n-3*k) * binomial(n-2*k,k) * binomial(n-3*k,k).at n=10A391985