370881

Appears in sequences

• a(1) = 1, then least square such that every partial concatenation is a prime.at n=23A090257
• Squares for which both the sum of the digits and the product of the digits are cubes.at n=18A117687
• a(n) = (29*n)^2.at n=21A133496
• Squares k such that k - 2 and k + 2 are prime.at n=17A144938
• Squares that become a prime number when prefixed with a 2.at n=28A167717
• Squares that become a prime number when prefixed with a 5.at n=17A167720
• Squares that become prime numbers when prefixed with an 8.at n=24A167723
• Numbers k such that phi(k)/k = 16/29.at n=19A172344
• Numbers n such that the sum_i (d_i^i) of the i-th powers of their sorted divisors d_1< d_2<...< n is prime.at n=16A180852
• Number of nX2 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally.at n=11A188516
• Squares representable as b! + triangular(c).at n=38A230365
• Square numbers of the form prime(k) + 2*prime(k+1).at n=23A284057
• Number of minimum total dominating sets in the n-prism graph.at n=57A303053
• a(n) = A322242(n)^2, the square of the central coefficient in (1 + 3*x + 4x^2)^n.at n=4A322243
• The sum of the numbers of the central diamond of the multiplication table [1..k] X [1..k] for k=2*n-1.at n=20A357042
• Odd squares k, multiples of 3 and non-multiples of 5, such that sigma(k)/k >= 5/3.at n=13A388016