31199

Appears in sequences

• Numbers n such that 283*2^n-1 is prime.at n=9A050900
• Decimal encoding of the prime factorization of n is a multiple of n.at n=4A067598
• The prime factors of n are also prime factors of the decimal encoding (A067599) of the prime factorization of n.at n=33A067671
• a(n) = 78*n^2 - 1.at n=19A158771
• Number of strings of numbers x(i=1..8) in 0..n with sum i*x(i)^4 equal to 8*n^4.at n=22A184852
• Number of permutations of length n containing exactly 1 occurrence of 1243.at n=8A224179
• Number of partitions p of n such that floor(mean(p)) is a part and ceiling(mean(p)) is not.at n=48A241342