Product ceiling(n/1)*ceiling(n/2)*ceiling(n/3)*...*ceiling(n/n) (the 'ceiling factorial').

A131385

Product ceiling(n/1)*ceiling(n/2)*ceiling(n/3)*...*ceiling(n/n) (the 'ceiling factorial').

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =16a(5) =60a(6) =144a(7) =672a(8) =1536a(9) =6480a(10) =19200a(11) =76032a(12) =165888a(13) =1048320a(14) =2257920a(15) =8294400a(16) =28311552a(17) =126904320a(18) =268738560a(19) =1470873600a(20) =3096576000a(21) =16094453760a(22) =51385466880a(23) =175814737920a(24) =366917713920

External references