25105

Appears in sequences

• Pisot sequence E(3,11), a(n) = floor(a(n-1)^2/a(n-2) + 1/2).at n=7A010911
• Composites that use the same digits as their prime factorization.at n=8A025283
• 1, together with numbers n that are the product of two primes p and q such that the multiset of the digits of n coincides with the multiset of the digits of p and q.at n=4A080718
• a(n) = 2*a(n-1) + 2*a(n-2) - 3*a(n-3), with a(0) = 0, a(1) = 1, a(2) = 2.at n=13A099232
• a(n) = 3*a(n-1) + 2*a(n-2) + a(n-3).at n=9A108153
• a(n) = A175369(n^2).at n=20A175370
• Composite numbers having the same digits as their prime factors (with multiplicity), excluding zero digits.at n=4A176670
• Number of fixed points over all unlabeled functions on n nodes.at n=11A217898
• Composite numbers n such that the distinct digits in n and the distinct digits in the proper divisors of n are the same.at n=16A237713
• Composite numbers having the same digits as their prime factors (with multiplicity), including zero digits.at n=3A280928
• Numbers k such that the set of all the decimal digits of k is the same as the set of all the decimal digits of the proper divisors of k.at n=17A282755
• Number of n X 3 0..1 arrays with each 1 adjacent to 0 or 2 king-move neighboring 1s.at n=7A295776
• T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 0 or 2 king-move neighboring 1s.at n=47A295781
• Composite numbers that are anagrams of the concatenation of their prime factors.at n=12A306474
• Least k such that A359247(k) = n, or 0 if no such k exists.at n=24A359657