1020100

Appears in sequences

• a(n) = n^2 written in base 3.at n=30A001738
• Write n in binary then square as if written in base 10.at n=10A063009
• Squares in every base >=3 (involving no carries and no digit apart from 0, 1 and 2).at n=9A066139
• Square such that the next three squares also having a square digit sum.at n=13A068834
• Numbers which on adding their reversal gives perfect cubes.at n=22A080179
• Squares whose digit reversal is a brilliant number (A078972).at n=33A115667
• a(n) = p^2*(p-1), where p = prime(n).at n=25A135177
• A002326((k-1)/2) for composite numbers k from A141229.at n=12A140198
• Numbers k such that if k = a*b, then a+b = reversal(k) for some integers a,b > 1.at n=35A161791
• Non-palindromic squares whose digit reversal gives a square (possibly with fewer digits).at n=34A161902
• Base 2i representation of negative integers.at n=35A212542
• Squares whose largest decimal digit is 2.at n=5A277946
• The first of three consecutive squares the sum of which is equal to the sum of three consecutive primes.at n=30A298222
• Number of coalescent histories for a matching completely symmetric gene tree and completely symmetric species tree with 2^n leaves.at n=4A306402
• Terms of A140110 that are not divisible by 6.at n=32A309263
• Squares using only decimal digits 0,1,2,3.at n=13A331543
• Perfect powers k such that A052409(k) is equal to A052409(A366275(k)).at n=40A366278
• Squares where larger digits have smaller multiplicity.at n=29A378498