a(n) = coefficient of sqrt(3) in the expansion of (2 + sqrt(2) + sqrt(3))^n.
A377111
a(n) = coefficient of sqrt(3) in the expansion of (2 + sqrt(2) + sqrt(3))^n.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =21a(4) =104a(5) =529a(6) =2700a(7) =13845a(8) =71120a(9) =365697a(10) =1881236a(11) =9679605a(12) =49809720a(13) =256324433a(14) =1319090972a(15) =6788338869a(16) =34934465440a(17) =179781713537a(18) =925203573540
External references
- oeis: A377111