-16896

Appears in sequences

• McKay-Thompson series of class 10B for the Monster group with a(0) = 0.at n=23A058098
• Riordan array ((3-sqrt(1+8x))/2, (sqrt(1+8x)-1)/4).at n=28A122440
• McKay-Thompson series of class 10B for the Monster group with a(0) = -4.at n=23A132040
• Expansion of e.g.f. 1/(1+Pi/4-arctan(2*x+1)).at n=8A199043