177240

Appears in sequences

• Number of primitive (period n) periodic palindromic structures using a maximum of three different symbols.at n=24A056514
• Smallest number having exactly n divisors that are not greater than the number's greatest prime factor.at n=29A087134
• a(n) = number of ways to dispose two pawns on a chessboard of size n X n (two dispositions are equivalent if one can be rotated or reflected to give the other one).at n=41A141582
• Number of length 1+3 0..n arrays with no disjoint pairs in any consecutive four terms having the same sum.at n=19A247727
• Square rings obtained by adding four identical cuboids from A169938, a(n) = 4*n*(n+1)*(n*(n+1)+1).at n=14A288486
• Numbers such that the two adjacent integers are a prime and the square of another prime.at n=29A347194
• The sum of the numbers on the perimeter of the n X n diamond frame, located at the top of the numerical pyramid containing the positive integers in natural order.at n=40A359096
• Numbers of the form (p+1)*(p+3) where (p,p+2) is a twin prime pair (cf. A001359).at n=21A362941
• Smallest number whose largest odd noncomposite divisor is its n-th divisor.at n=29A384232