137842

Appears in sequences

• Numbers k such that k | 9^k + 1.at n=16A015957
• a(n) = 2*n^3.at n=41A033431
• Composites which use less than all of their digits in their prime factorization.at n=19A074211
• Numbers n such that n | 3^n^2 + 1.at n=4A093666
• a(n) = 2*(n^2 + 3*n + 1)^3.at n=5A109118
• a(n) = 2*prime(n)^3.at n=12A172190
• a(n) = floor(1/{(2+n^4)^(1/4)}), where {} = fractional part.at n=41A184537
• Number of 2 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s.at n=18A297432