25625

Appears in sequences

• a(n) = (2*n - 9)*n^2.at n=25A015243
• Numbers k such that k | 4^k + 1.at n=13A015950
• Numbers k that divide 4^k + 1, k not a power of 5.at n=6A015974
• Numbers that are the sum of 2 nonzero squares in exactly 5 ways.at n=8A025288
• Numbers that are the sum of 2 nonzero squares in 5 or more ways.at n=28A025296
• Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=6A025306
• Numbers that are the sum of 2 distinct nonzero squares in 5 or more ways.at n=26A025315
• Shifts left 2 places under "BGK" (reversible, element, unlabeled) transform.at n=19A032067
• Concatenations of two squares in two ways.at n=9A038670
• Numbers k that divide 8^k + 2^k.at n=32A045581
• a(n) is the decimal concatenation of n and n^2.at n=24A053061
• Smallest multiple of n^2 beginning and ending in n, or 0 if no such multiple exists.at n=24A078211
• Number of distinct self-dual normal bases for GF(2^n) over GF(2).at n=40A135488
• Positive numbers y such that y^2 is of the form x^2 + (x+127)^2 with integer x.at n=11A159466
• Numbers that are in more than one way the concatenation of the decimal representation of two nonzero squares.at n=9A192993
• Value of y for solution of 5^n = x^2 + y^2 with closest x and y (n >= 0, 0 <= x < y).at n=13A236572
• Numbers n such that the decimal number concat(5,n) is a square.at n=37A273360
• Numbers n such that n^k is of the form (a^2 + b^4)/2 for all k > 0 (a, b > 0).at n=43A274356
• Numbers that are the sum of 2 squares in exactly 5 ways.at n=12A294716
• Main diagonal of A332354.at n=23A332355