Constant term in the expansion of (1 + x + y + z + 1/(x*y) + 1/(y*z) + 1/(z*x))^n.
A361677
Constant term in the expansion of (1 + x + y + z + 1/(x*y) + 1/(y*z) + 1/(z*x))^n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =19a(4) =73a(5) =181a(6) =1711a(7) =10081a(8) =38809a(9) =256033a(10) =1696861a(11) =8388271a(12) =49449511a(13) =326195299a(14) =1847392093a(15) =10789655059a(16) =69202030969a(17) =418647580489
External references
- oeis: A361677