Triangle T(n,k) giving the number of terms of A219666 which have n digits (A084558) in their factorial base expansion and whose most significant digit (A099563) in that base is k.
A230420
Triangle T(n,k) giving the number of terms of A219666 which have n digits (A084558) in their factorial base expansion and whose most significant digit (A099563) in that base is k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =1a(6) =6a(7) =5a(8) =4a(9) =4a(10) =22a(11) =19a(12) =16a(13) =14a(14) =12a(15) =94a(16) =82a(17) =73a(18) =65a(19) =59a(20) =55a(21) =479a(22) =432a(23) =395a(24) =362a(25) =336a(26) =314a(27) =293a(28) =2886a(29) =2667
External references
- oeis: A230420