371589120

Appears in sequences

• Order of 2^n X 2^n unitary group H_n acting on Siegel modular forms.at n=3A027638
• a(n) = 2^n*(n-1)! for n > 1, a(1) = 1.at n=9A032184
• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*8^j.at n=31A038334
• Denominators in the series for Bessel function J8(x).at n=1A061407
• Number of necklaces with n labeled beads of 2 colors.at n=9A066318
• Startorial numbers: product of initial digits of integers 1 through n.at n=28A109834
• Duplicate of A032184.at n=8A130683
• Product of the arithmetic derivatives from 2 to n.at n=14A165559
• Product of the arithmetic derivatives from 2 to n.at n=15A165559
• (n-1)-st elementary symmetric function of the first n terms of the periodic sequence (4,1,2,3,4,1,2,3,...).at n=21A203164
• A variant of payphone permutations: given a circular booth with n payphones, one of which is already occupied, a(n) is the number ways for n-1 people to choose the payphones in order, where each person chooses an unoccupied payphone such that the closest occupied payphone is as distant as possible, and a payphone adjacent to a single occupied payphone is preferred over a payphone sandwiched between two occupied payphones.at n=18A361294