288360

Appears in sequences

• McKay-Thompson series of class 18B for the Monster group.at n=31A058532
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined below in Comments.at n=15A192427
• McKay-Thompson series of class 18B for the Monster group with a(0) = 2.at n=31A215407
• McKay-Thompson series of class 18B for the Monster group with a(0) = 5.at n=31A215660
• Numbers n such that 2n-1 and 2n+1 divide 2^n-1.at n=19A233089