a(n) is the number of ways 2n-1 seats can be occupied by at most n people for n>=1, with a(0)=1.

A152059

a(n) is the number of ways 2n-1 seats can be occupied by at most n people for n>=1, with a(0)=1.

Terms

    a(0) =1a(1) =2a(2) =13a(3) =136a(4) =1961a(5) =36046a(6) =805597a(7) =21204548a(8) =642451441a(9) =22021483546a(10) =842527453421

External references