47074

Appears in sequences

• Palindromic even numbers with exactly 2 prime factors (counted with multiplicity). Equivalently, palindromic numbers of the form 2*p with p prime.at n=33A075813
• Palindromic Smith numbers.at n=24A098834
• Molien series for invariants of finite Coxeter group A_11.at n=62A266780
• Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.at n=10A304008
• a(n) = 2 + 4^(n - 1) - (2 - sqrt(2))^(n - 1) - (2 + sqrt(2))^(n - 1).at n=8A377501