80963

Properties

Appears in sequences

• a(n) = 5*a(n-1) - 2*a(n-2), with a(0)=2, a(1)=9.at n=7A020698
• Triangle of numbers T(n,k) (n>=0, n>=k>=0) of transitive reflexive early confluent binary relations R on n labeled elements where k=max_{x}(|{y : xRy}|), read by rows.at n=38A135313
• T(n,k) = number of n X k 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).at n=47A207997
• T(n,k) = number of n X k 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).at n=52A207997
• Number of transitive reflexive early confluent binary relations R on n labeled elements with max_{x}(|{y : xRy}|) = 2.at n=6A218092
• Number of transitive reflexive early confluent binary relations R on n+6 labeled elements with max_{x}(|{y : xRy}|) = n.at n=2A218106
• Number of length n inversion sequences avoiding the patterns 010, 120, and 210.at n=10A279558
• Primes of the form p+q*(r+s), where p,q,r,s are consecutive primes.at n=12A343449
• Number of partitions of n that contain at least one odd prime as a part.at n=45A355193
• Table read by descending antidiagonals: T(k,n) (k >= 0, n>= 1) is number of ways to (k+2)-color a 3 X n grid ignoring the variations of two colors.at n=37A355881
• Expansion of (1+2*x-x^3) / (1-5*x^2+2*x^4).at n=15A384611
• Prime numbersat n=7924