39218

Appears in sequences

• Start of record gap in even semiprimes (A100484).at n=12A114058
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=17A192978
• Triangle T(n, k) = Numbers of inequivalent (mod D_3) ways to place k points on a triangular grid of side n so that no three of them are vertices of an equilateral triangle of any orientation. Triangle read by rows.at n=38A243141
• Number of compositions of n whose negation is unimodal.at n=26A332578