40860

Appears in sequences

• Product of sums of divisors and non-divisors.at n=37A066859
• Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly n ways.at n=7A076459
• Numbers k such that the three second-degree cyclotomic polynomials x^2 + 1, x^2 - x + 1 and x^2 + x + 1 are simultaneously prime when evaluated at x=k.at n=24A087277
• Number of partitions of n containing a clique of size 9.at n=49A183566
• Number of right triangles on a (n+1)X6 grid.at n=30A189810
• Smallest number k such that R(n) is the n-th divisor of k, where R(n) is the n-th Ramanujan prime (A104272).at n=17A233933
• Array read by antidiagonals: T(n,k) = number of n X k lonesum decomposable (0,1) matrices of decomposition order 2.at n=49A299905
• Array read by antidiagonals: T(n,k) = number of n X k lonesum decomposable (0,1) matrices of decomposition order 2.at n=50A299905