516164

Appears in sequences

• Expansion of (1-x)/(1+x-2*x^2-x^3).at n=22A078038
• Number of palindromic compositions of n with parts in {1,2,4,6,8,10,...}.at n=44A276055
• a(n) = a(n-1) + 2*a(n-2) - a(n-3), where a(0) = 2, a(1) = 4, a(2) = 7.at n=21A287381