a(n) = floor(Pt(n)/n!), where Pt(n) is product of first n positive triangular numbers (A000217).
A233005
a(n) = floor(Pt(n)/n!), where Pt(n) is product of first n positive triangular numbers (A000217).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =22a(5) =78a(6) =315a(7) =1417a(8) =7087a(9) =38981a(10) =233887a(11) =1520268a(12) =10641881a(13) =79814109a(14) =638512875a(15) =5427359437a(16) =48846234937a(17) =464039231906
External references
- oeis: A233005