125125

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 5 and 6.at n=17A137003
• Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 7.at n=50A137004
• Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 8.at n=35A137005
• Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 9.at n=32A137006
• The z^2 coefficients of the polynomials in the GF1 denominators of A156921.at n=9A157706
• Denominator of Laguerre(n, -6).at n=15A160608
• a(n) = concatenation of n^3 with itself.at n=4A175605
• 5^n concatenated with itself.at n=3A206528
• Fixed points of A153212: After a(1) = 1, numbers of the form p_i1^i1 * p_i2^(i2-i1) * p_i3^(i3-i2) * ... * p_ik^(ik-i_{k-1}), where p_i's are distinct primes present in the prime factorization of n, with i1 < i2 < i3 < ... < ik, and k = A001221(n) and ik = A061395(n).at n=50A242421
• Number of 3 X n 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=14A279710