22733

Appears in sequences

• Brilliant numbers (A078972) whose digit reversal is the product of 2 palindromes greater than 1.at n=26A115681
• Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=13A193005
• a(n) is the least number of sides of a regular inscribed k-gon whose perimeter yields Pi to within 1/10^n.at n=8A259441