47611

Appears in sequences

• Strong pseudoprimes to base 11.at n=12A020237
• Strong pseudoprimes to base 23.at n=21A020249
• Strong pseudoprimes to base 90.at n=14A020316
• a(n) = (2*n - 1)*(11*n^2 - 11*n + 6)/6.at n=23A063492
• a(n) is the smallest composite squarefree number k such that (p+n) | (k-1) for every prime p dividing k.at n=21A274445
• Smallest number k such that A049559(k) / A187730(k) = n.at n=22A284440