27252

Appears in sequences

• a(n) = (n+1)*(5*n^2+4*n+1).at n=17A027849
• Number of columns in all deco polyominoes of height n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=7A121586
• Number of primes between (prime(n + 1))^Pi and (prime(n))^Pi.at n=30A137380
• a(n) = 1 + (1200 + (634 + (225 + (85 + (15 + n)*n)*n)*n)*n)*n/720.at n=14A145128
• Number of 9-step E, S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=4A187592
• a(n) = the smallest number k such that the base-10 digital sum of sigma(k) is n.at n=37A256635
• Expansion of Product_{k>=1} (1 + 2*x^k)/(1 - 2*x^k).at n=11A261584
• Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and the total absolute value of displacements not greater than n.at n=12A263934
• Number of weakly unimodal compositions of n in which the greatest part occurs exactly five times.at n=47A320316
• Composite numbers that contain only prime digits and whose prime factors contain only prime digits.at n=40A387093