725725

Appears in sequences

• Numbers k such that k and k^2 use only the digits 2, 3, 5, 6 and 7.at n=43A137080
• Numbers k such that k and k^2 use only the digits 2, 5, 6 and 7.at n=14A137110
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 8.at n=53A137111
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 9.at n=36A137112
• Triangle read by rows: T(n,k) = number of partitions of [1..k] into n nonempty clumps of sizes 1, 2, 3 or 4 (n >= 0, 0 <= k <= 4n).at n=41A144643
• a(n) = (A006935(n) - 1) / ord(2,A006935(n)/2), where ord(k,m) is the multiplicative order of k modulo m.at n=29A350083