237169

Appears in sequences

• Strong pseudoprimes to base 10.at n=30A020236
• Squares which remain squares when the last digit is removed.at n=13A023110
• Squares which are the concatenation of two nonzero squares.at n=21A039686
• Squares composed of two '2-digit' overlapping subsquares.at n=0A048423
• Powers of a prime lucky number (A031157) but excluding lucky numbers (A000959).at n=32A057609
• Numbers having exactly four anti-divisors.at n=40A066469
• a(n+1) is the smallest square > a(n) such that the digits of a(n) are all (with multiplicity) properly contained in the digits of a(n+1), with a(0)=1.at n=5A067711
• a(n+1) is the smallest square > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(0)=1.at n=10A067713
• Smallest composite k such that phi(k) > k*(1-1/n^2).at n=21A069639
• Numbers with at least two odd prime factors (not necessarily distinct) such that in binary representation all divisors of n are contained in n.at n=17A105442
• To find the next term, multiply the number obtained by reading the even digits in order by the number obtained by reading the odd digits in order.at n=0A122474
• Squares which are concatenation of two positive squares with possible intervening zeros.at n=23A147608
• Squares which are anagrams of cubes.at n=20A161860
• (2*3^(n-1)+1)^2.at n=5A169724
• Squares in A111153.at n=24A175255
• Squares which have one or more occurrences of exactly six different digits.at n=21A235721
• Squares representable as k*m + k + m, where k >= m > 1 are squares.at n=29A256074
• Squares, without multiplicity, that are the concatenation of two integers (without leading zeros) the product of which is also a square.at n=22A258060
• The smallest square referenced in A086982 (Numbers n such that 10^n+1 is not squarefree).at n=22A282344
• Composite numbers k such that tau(k^(k-1)) is a prime.at n=41A283549