269777

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 2, 6, 7 and 9.at n=16A136923
• Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 9.at n=25A137015
• Numbers k such that k and k^2 use only the digits 2, 3, 6, 7 and 9.at n=12A137089
• Numbers k such that k and k^2 use only the digits 2, 4, 6, 7 and 9.at n=20A137102
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 9.at n=33A137112
• Numbers k such that k and k^2 use only the digits 2, 6, 7, 8 and 9.at n=14A137118
• Numbers k such that k and k^2 use only the digits 2, 6, 7 and 9.at n=3A137119
• Number of integer compositions of n whose length is twice their alternating sum.at n=25A357847
• a(n) = smallest integer x such that Sum_{k = 2..x} 1/(k*log(log(k))) > n.at n=8A361089