a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks the digits 1,2,3,4 and at least one of digits 5,6,7,8,9.
A126634
a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks the digits 1,2,3,4 and at least one of digits 5,6,7,8,9.
Terms
- a(0) =6a(1) =36a(2) =216a(3) =1296a(4) =7656a(5) =44136a(6) =248016a(7) =1362096a(8) =7338456a(9) =38927736a(10) =203958816a(11) =1058224896a(12) =5448329256a(13) =27880971336a(14) =141993797616a(15) =720419919696
External references
- oeis: A126634