255025

Appears in sequences

• Numbers k such that k | 4^k + 1.at n=22A015950
• Numbers k such that k | 9^k + 1.at n=19A015957
• Numbers k that divide 4^k + 1, k not a power of 5.at n=14A015974
• Squares composed of digits {0,2,5}, not ending with zero.at n=4A058426
• Squares that are the concatenation of three numbers, one of which is the sum of the other two.at n=13A062555
• a(n) = n*(n+1)*(n+2)*(n+3)+1 = (n^2 + 3*n + 1)^2.at n=21A062938
• Perfect powers pp(n) with perfect power index n.at n=32A075433
• Squares of the form u'v'w, where in decimal representation u=n^2, v=2*n^2 and w=n^2 possibly with a leading zero.at n=4A077432
• Nonnegative integers c such that there are nonnegative integers a and b that satisfy a^(1/2) + b^(1/2) = c^(1/2) and a^2 + b = c.at n=10A135509
• First n-digit square in the digits of Pi.at n=5A185299
• Perfect squares k such that each decimal digit of k is equal to the difference of at least two other digits of k.at n=7A255893
• Number of non-attacking bishop positions on a 3 X n chessboard.at n=10A287120
• Squares whose largest digit is 5.at n=35A295015
• Perfect powers in A329150.at n=26A361821
• Perfect powers k such that A052409(k) is equal to A052409(A366275(k)).at n=21A366278
• Squares where larger digits have larger multiplicity.at n=10A378492