Number of generalized mountain numbers (see A134853) with n digits.
A178912
Number of generalized mountain numbers (see A134853) with n digits.
Terms
- a(0) =9a(1) =0a(2) =240a(3) =1380a(4) =4578a(5) =10794a(6) =19494a(7) =27912a(8) =32195a(9) =30085a(10) =22748a(11) =13820a(12) =6656a(13) =2486a(14) =695a(15) =137a(16) =17a(17) =1
External references
- oeis: A178912