25273

Appears in sequences

• Strong pseudoprimes to base 24.at n=12A020250
• Exactly 5 digits from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a lucky number.at n=42A032701
• A Chebyshev transform of Padovan numbers.at n=39A099491
• A007318 * A157019.at n=12A157029
• a(n) = 78*n^2 + 1.at n=18A158769
• Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.at n=4A197644
• Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.at n=3A197645
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.at n=31A197648
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.at n=32A197648
• Number of 0..2 arrays x(0..n-1) of n elements with each no smaller than the sum of its four previous neighbors modulo 3.at n=13A200463
• a(n) + a(n+2) = n^3.at n=37A206481
• Difference between the number of odd parts and the number of even parts in all the partitions of n.at n=31A209423
• Numbers n such that phi(n) = sigma(n) - reversal(sigma(n)).at n=10A230012
• Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=13A299576
• Squarefree k > 1 with sigma(sigma(sigma(k))) < 3*k + 1.at n=31A320513
• a(n) is equal to the number of black 1 X 1 X 1 cubes in a certain coloring of the n X n X n cube (see comments for precise definition).at n=36A365486