25921

Appears in sequences

• Squares of palindromes.at n=25A014186
• Squares of odd hexagonal pyramidal numbers.at n=3A014801
• a(n) = (4*n + 1)^2.at n=40A016814
• a(n) = (5*n + 1)^2.at n=32A016862
• a(n) = (6*n + 5)^2.at n=26A016970
• a(n) = (7*n)^2.at n=23A016982
• a(n) = (8*n + 1)^2.at n=20A017078
• a(n) = (9*n + 8)^2.at n=17A017258
• a(n) = (10*n + 1)^2.at n=16A017282
• a(n) = (11*n + 7)^2.at n=14A017474
• a(n) = (12*n + 5)^2.at n=13A017582
• a(n) is the smallest square that is the sum of n distinct positive squares.at n=41A018936
• Squares with initial digit '2'.at n=33A045785
• Number of degree-n permutations of order dividing 7.at n=9A053497
• a(n) and floor(a(n)/5) are both squares; i.e., squares which remain squares when written in base 5 and last digit is removed.at n=9A055812
• Number of 3 x n binary matrices without unit columns up to row and column permutations.at n=40A057524
• Denominator of 1/49 - 1/n^2.at n=16A061048
• Squares with digital root 1.at n=35A061099
• Numbers k such that tau(k) - tau(k+1) = 1.at n=28A068208
• Squares x such that x + reverse of x is a prime.at n=12A072367