74476

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 4, 5, 6 and 7.at n=8A136948
• Numbers k such that k and k^2 use only the digits 1, 4, 5, 6 and 7.at n=11A137046
• Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 7.at n=53A137094
• Numbers k such that k and k^2 use only the digits 3, 4, 5, 6 and 7.at n=16A137121
• Numbers k such that k and k^2 use only the digits 4, 5, 6 and 7.at n=2A137139
• Numbers k such that k and k^2 use only the digits 4, 5, 6, 7 and 8.at n=18A137140
• Numbers k such that k and k^2 use only the digits 4, 5, 6, 7 and 9.at n=5A137141
• G.f.: A(x) = exp( Sum_{n>=1} sigma(n)^2*x^n/n ), a power series in x with integer coefficients.at n=15A156302
• Numerator of Hermite(n, 13/25).at n=4A160059
• Numbers n such that the decimal expansions of both n and n^2 have 4 as the digit with the smallest value and 7 as the digit with the largest value.at n=1A257534