100489

Appears in sequences

• a(n) = (8*n + 5)^2.at n=39A017126
• a(n) = (11*n + 9)^2.at n=28A017498
• a(n) = (12*n + 5)^2.at n=26A017582
• Squares which are palindromes in base 4.at n=11A029987
• Smallest nontrivial extension of n-th square which is a square not ending 00.at n=9A030688
• The periodic point counting sequence for the toral automorphism given by the polynomial of (conjectural) smallest Mahler measure. The map is x -> Ax mod 1 for x in [0,1)^10, where A is the companion matrix for the polynomial x^10+x^9-x^7-x^6-x^5-x^4-x^3+x+1.at n=52A059928
• a(n) = smallest n-digit square.at n=5A061432
• a(1) = 1; a(n+1) = smallest square > a(n) with leading digit equal to final digit of a(n) and final digit not 0.at n=8A061449
• Numbers n such that sigma(d(n^3))==d(sigma(n^2)), where d(n) is the number of divisors of n.at n=23A063797
• a(1) = 1; a(n) = smallest nontrivial n-digit perfect power.at n=5A069658
• a(1) = 1 . Then smallest n-digit square (MSD) starting with the LSD of the previous term and not a multiple of 100.at n=5A077204
• Numbers k having exactly one divisor d such that in binary representation d and k/d have the same number of 1's as k.at n=15A080026
• Square of primes of the form 4k+1 (A002144).at n=30A080109
• Smith square numbers.at n=10A098839
• Numbers m such that Sum_{p prime|m} p^r(p) = m, where r(p) is the least positive primitive root of p (A001918).at n=33A101051
• a(n) is the least k such that k-n and k are adjacent powerful numbers.at n=21A103955
• Primes squared of the form k + prime(k).at n=7A104935
• Squares of the form n+prime(n).at n=29A104992
• Perfect powers which have the form prime(n) + n for some n.at n=35A107606
• Squares of the form 6p+7 for p prime (A110015) that are squares of a prime.at n=29A110586