23191

Appears in sequences

• From the game of Quod: number of "squares" on an n X n array of points with the four corner points deleted.at n=21A124479
• Partial sums of economical numbers A046759.at n=21A172460
• Partial sums of ceiling(Fibonacci(n)/2).at n=22A179018
• Number of nondecreasing arrangements of n+2 numbers in 0..5 with each number being the sum mod 6 of two others.at n=14A183908
• Smallest k such that k*2*p(n)^2-1=q is prime, k*2*q^2-1=r, k*2*r^2-1=s, k*2*r^2-1=t, r, s, and t are also prime.at n=28A224492
• Number of symmetrically unique Dyck paths of semilength n and height nine.at n=5A291893
• Number of Sommerville symmetrical cyclic compositions (on symmetric necklaces) of n that are Carlitz (adjacent parts on the circle are distinct).at n=36A292200
• Positive numbers k such that -k, -(k + 1), and -(k + 2) are 3 consecutive negative negaFibonacci-Niven numbers (A331088).at n=46A331090