65506

Appears in sequences

• a(0)=1, a(1)=2, a(2)=5, a(n) = 3*a(n+2) - a(n+3).at n=11A052963
• Let r(n) be the real positive root of Sum_{k=1..n} x^k = 1, then a(n) = round(1/(r(n) - 1/2)).at n=13A079460
• Row sums of triangle A132731.at n=15A132732
• Row sums of triangle A132823.at n=16A132824
• Double, add 0, double, add 1, double, add 2, double, add 3, etc.at n=29A147678
• Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by one.at n=14A269495
• Number of ways to select 3 or more collinear points from a 4 X n grid.at n=13A355552