24949

Appears in sequences

• Numbers k such that 13k = 6j^2 + 6j + 1.at n=35A106390
• Triangle, read by rows, T(n, k) = (2*n)!/((n-k)! * k!)^2 - (2*n)!/(n!)^2 + 1.at n=17A176078
• Triangle, read by rows, T(n, k) = (2*n)!/((n-k)! * k!)^2 - (2*n)!/(n!)^2 + 1.at n=18A176078
• n^3 + 4*n^2 - 5*n + 1.at n=28A241577
• Composite numbers k such that 2^(k-1) == - lambda(k) (mod k), where lambda is the Carmichael lambda function (A002322).at n=6A330446
• Number of integer partitions of n that are neither Look-and-Say nor section-sum.at n=39A383510
• Truncated centered square numbers: a(n) = 14*n^2 - 22*n + 9.at n=42A389928