584325

Appears in sequences

• Odd pentagonal pyramidal numbers.at n=26A015223
• Triangle of column sequences with a certain o.g.f. pattern.at n=50A112500
• Odd nonsquares k for which A161942(k) >= k, where A161942 is the odd part of sigma.at n=14A348743
• a(n) = (3*n-1)*(n^4-18*n^3+179*n^2-582*n+720)/120.at n=32A381193
• Odd nondeficient numbers of the form p^(1+4k) * r^2, where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1.at n=14A386427
• a(n) = (8*n + 1)^2*(4*n + 1).at n=13A387684