Least power of 3 having exactly n consecutive 7's in its decimal representation.
A131546
Least power of 3 having exactly n consecutive 7's in its decimal representation.
Terms
- a(0) =3a(1) =11a(2) =112a(3) =184a(4) =721a(5) =3520a(6) =6643a(7) =12793a(8) =67448a(9) =208380a(10) =364578a(11) =1123485a(12) =9549790a(13) =23340555a(14) =88637856
External references
- oeis: A131546