4733820

Appears in sequences

• a(n) = 3^n - 3*2^n + 3.at n=14A001117
• Number of bipartite graphs with 4 edges on nodes {1..n}.at n=15A053527
• Number of palindromes of length n using exactly three different symbols.at n=26A056454
• Number of palindromes of length n using exactly three different symbols.at n=27A056454
• Number of periodic palindromes using exactly three different symbols.at n=26A056489
• A(k,3) where A(k,n) = Sum_{m=1..k} (-1)^(m+1) *binomial(n,m)*m^k.at n=13A179483