24431

Appears in sequences

• Strong pseudoprimes to base 71.at n=16A020297
• Number of partitions of n into parts not of the form 19k, 19k+8 or 19k-8. Also number of partitions with at most 7 parts of size 1 and differences between parts at distance 8 are greater than 1.at n=39A035977
• Odd numbers n such that the sum of the binary digits of n and n^2 both equal 12.at n=24A261593
• Numbers k such that both k and k+2 are de Polignac numbers (A006285).at n=36A330284
• The positive odd numbers x such that x = c^2 - y and +-x = a +- y, where (a,b,c) is a primitive Pythagorean triple (PPT), a is odd and y is an even positive integer.at n=34A357535
• Numbers whose prime factorization (prime factors and exponents) contains the digits 1 and 2 at least once, but no other digits.at n=28A364484