163499212800
domain: N
Appears in sequences
- a(n) = 2^n*(n-1)! for n > 1, a(1) = 1.at n=11A032184
- Denominators in the series for Bessel function J10(x).at n=1A061441
- Number of necklaces with n labeled beads of 2 colors.at n=11A066318
- Duplicate of A032184.at n=10A130683
- Random walk in R^3: Denominators of the expected distance after n steps.at n=13A340003
- Denominator of the expected fraction of guests without a napkin in Conway's napkin problem with n guests.at n=11A341233