59169

Appears in sequences

• Number of primitive (period n) periodic palindromic structures using a maximum of three different symbols.at n=22A056514
• 24 'Reverse and Add' steps are needed to reach a palindrome.at n=20A065318
• Solution of the complementary equation a(n) = 3*a(n-1) + b(n-1) - n, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=10A295137