25727

Appears in sequences

• a(0) = 1, a(n) = 21*n^2 + 2 for n>0.at n=35A010011
• Numbers n such that 10^n - 53 is prime.at n=18A178430
• Number of lower triangles of an n X n 0..4 array with each element equal to the number of its horizontal and vertical neighbors unequal to itself.at n=14A195952
• a(n) is the smallest integer k > 1 such that k cannot be expressed as a sum of distinct earlier terms nor is a multiple of any earlier term.at n=17A330070
• Composite terms in A330070.at n=5A330126
• Number of polyforms with n cells on the faces of a deltoidal icositetrahedron up to rotation.at n=16A383805