100020001
domain: N
Appears in sequences
- Palindromic squares.at n=20A002779
- Strobogrammatic squares: the same upside down (calculator-style numerals).at n=8A018849
- Palindromic squares with an odd number of digits.at n=18A028817
- Palindromes whose sum of divisors is odd.at n=27A028984
- a(n) = (10^n + 1)^2.at n=4A033934
- Economical palindromes.at n=39A047739
- Palindromes whose square root is a palindrome.at n=14A057136
- Squares composed of digits {0,1,2}, not ending with zero.at n=7A058412
- Write n in binary then square as if written in base 10.at n=17A063009
- Palindromes whose digit sum is 4.at n=20A065983
- Squares in every base >=3 (involving no carries and no digit apart from 0, 1 and 2).at n=14A066139
- Palindromes n for which there is a unique k such that n = k + reverse(k).at n=24A068065
- a(1) = 1; a(n) = smallest nontrivial n-digit perfect power.at n=8A069658
- Smallest nontrivial (no trailing zeros) n-digit square with minimum digit sum.at n=8A069667
- Largest nontrivial (no trailing zeros) n-digit square with minimum digit sum.at n=8A069668
- a(n) = smallest n-digit number with exactly n divisors, or 0 if no such number exists.at n=8A070844
- Palindromic perfect powers.at n=24A075786
- Numbers n such that n multiplied by its reverse yields a fourth power.at n=30A131760
- Palindromic numbers which are the product of a number k and its reversal (k written backwards).at n=28A158642
- Squares whose sum and number of digits are also squares.at n=22A168139