a(n) is the number of integers that can be represented in a 7-segment display by using only n segments (version A006942).
A350437
a(n) is the number of integers that can be represented in a 7-segment display by using only n segments (version A006942).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =3a(5) =7a(6) =12a(7) =18a(8) =31a(9) =52a(10) =92a(11) =158a(12) =269a(13) =460a(14) =786a(15) =1350a(16) =2317a(17) =3969a(18) =6798a(19) =11643a(20) =19952a(21) =34197a(22) =58601a(23) =100410a(24) =172042a(25) =294791a(26) =505143a(27) =865589a(28) =1483206a(29) =2541480
External references
- oeis: A350437