119833

Appears in sequences

• a(n) = 2*a(n-1) + a(n-3), with a(0)=1 and a(1)=2.at n=15A008998
• Pisot sequences E(4,9), P(4,9).at n=13A020708
• The Ca3 sums of the Pell-Jacobsthal triangle A013609.at n=7A180675