a(n) is the number of nonnegative integers that can be represented in a 7-segment display by using only n segments (version A010371).
A331530
a(n) is the number of nonnegative integers that can be represented in a 7-segment display by using only n segments (version A010371).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =3a(5) =3a(6) =8a(7) =7a(8) =16a(9) =23a(10) =48a(11) =70a(12) =125a(13) =192a(14) =345a(15) =561a(16) =972a(17) =1578a(18) =2683a(19) =4436a(20) =7537a(21) =12536a(22) =21114a(23) =35163a(24) =59123a(25) =98837a(26) =166006a(27) =277650a(28) =465619a(29) =779296
External references
- oeis: A331530