A328759 Lexicographically earliest sequence of distinct positive numbers such that for any n > 0, the first nonzero digit of a(n+1)/a(n) is "8".

1, 8, 7, 6, 5, 4, 32, 26, 21, 17, 14, 12, 10, 80, 64, 52, 42, 34, 3, 24, 2, 16, 13, 11, 9, 72, 58, 47, 38, 31, 25, 20, 160, 128, 103, 83, 67, 54, 44, 36, 29, 232, 19, 152, 122, 98, 79, 65, 53, 43, 35, 28, 23, 184, 15, 120, 96, 77, 62, 50, 40, 33, 27, 22, 18

Offset

1,2

Comments

In other words, for any n > 0, we have an integer k such that floor(10^k * a(n+1)/a(n)) = 8.

Links

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Example

The first terms, alongside a(n+1)/a(n), are:
  n   a(n)  a(n+1)/a(n)
  --  ----  -----------
   1     1  8
   2     8  0.875
   3     7  0.857142...
   4     6  0.833333...
   5     5  0.8
   6     4  8
   7    32  0.8125
   8    26  0.807692...
   9    21  0.809523...
  10    17  0.823529...
  11    14  0.857142...
  12    12  0.833333...

Crossrefs

See A328752 for similar sequences.

Sequence in context: A194756 A132672 A212410 * A132037 A247095 A124597

Adjacent sequences: A328756 A328757 A328758 * A328760 A328761 A328762

Keyword

nonn,base

Author

Rémy Sigrist, Oct 27 2019

Status

approved