519156

Appears in sequences

• a(n) = 3^n - 3*2^n + 3.at n=12A001117
• Number of palindromes of length n using exactly three different symbols.at n=22A056454
• Number of palindromes of length n using exactly three different symbols.at n=23A056454
• Number of primitive (aperiodic) palindromes using exactly three different symbols.at n=22A056464
• Number of periodic palindromes using exactly three different symbols.at n=22A056489
• Number of primitive (period n) periodic palindromes using exactly three different symbols.at n=22A056499
• A(k,3) where A(k,n) = Sum_{m=1..k} (-1)^(m+1) *binomial(n,m)*m^k.at n=11A179483
• Numbers that have exactly 10 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3.at n=1A321160