19757

Appears in sequences

• Pseudoprimes to base 66.at n=39A020194
• Strong pseudoprimes to base 13.at n=9A020239
• Strong pseudoprimes to base 66.at n=10A020292
• Cupolar numbers: a(n) = (n+1)*(5*n^2 + 7*n + 3)/3.at n=22A096000
• a(n) = prime(n)^3 mod (n^2 + prime(n)^2).at n=50A243769
• a(n) = (8*n^3 + 12*n^2 + 4*n - 9)/3.at n=18A358035
• a(n) is the number of multisets of n positive decimal digits where the sum of the digits equals the product of the prime digits.at n=43A384505