90625
domain: N
Appears in sequences
- Automorphic numbers: m^2 ends with m.at n=9A003226
- Automorphic numbers ending in digit 5: a(n) = 5^(2^n) mod 10^n.at n=4A007185
- Numbers k such that the decimal expansion of k^2 contains k as a substring.at n=33A018834
- Number of noninvertible 2 X 2 matrices over Z/nZ (determinant is a divisor of 0).at n=23A020479
- Substring of both its square and its cube.at n=31A029943
- Trimorphic numbers: n^3 ends with n. Also m-morphic numbers for all m > 5 such that m-1 is not divisible by 10 and m == 3 (mod 4).at n=46A033819
- Hexamorphic numbers: k such that the k-th hexagonal number ends with k.at n=24A039594
- Numbers k such that decimal expansion of k^2 contains k as a substring and k does not end in 0.at n=10A046831
- Numbers k such that k^2 can be obtained from k by inserting a block of digits.at n=32A046838
- Number of ordered factorizations with 3 levels of parentheses indexed by prime signatures: A050358(A025487(n)).at n=20A050359
- Numbers m such that m-th triangular number (A000217) ends in m.at n=6A067270
- Numbers n such that the digits of P_7(n), the n-th heptagonal number, end in n.at n=40A067271
- Automorphic numbers: numbers k such that k^6 ends with k. Also m-morphic numbers for all m not congruent to 26 (mod 50) but congruent to 6 (mod 10).at n=41A068408
- 5th binomial transform of (1,4,0,0,0,0,...).at n=6A081040
- Square pyramorphic numbers: integers m such that the sum of the first m squares (A000330) ends in m.at n=34A093534
- Least n-digit automorphic number.at n=4A094190
- Numbers j that are the hypotenuse of exactly 16 distinct integer-sided right triangles, i.e., j^2 can be written as a sum of two squares in 16 ways.at n=3A097238
- Numbers k such that the decimal representation of k is contained as substring in that of the k-th triangular number.at n=19A119238
- Square of the (3,1)-entry of the 3 X 3 matrix M^n, where M = [1,0,0; 1,1,0; 1,i,1].at n=24A125641
- Numbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.at n=20A179782