A324079 a(0) = 1, followed by pairs (multiplicity of rarest term, value of that term). Choose the least value of rarest term if there is a tie.

1, 1, 1, 3, 1, 1, 3, 2, 3, 1, 2, 2, 2, 3, 3, 4, 2, 1, 4, 2, 4, 3, 4, 4, 4, 6, 2, 1, 6, 2, 6, 3, 6, 4, 6, 5, 6, 1, 5, 2, 5, 3, 5, 4, 5, 5, 5, 6, 6, 7, 5, 1, 7, 2, 7, 3, 7, 4, 7, 5, 7, 6, 7, 7, 7, 9, 3, 1, 9, 2, 9, 3, 9, 4, 9, 5, 9, 6, 9, 7, 9, 8, 9, 1, 8, 2, 8, 3, 8, 4, 8, 5, 8, 6, 8, 7, 8, 8, 8, 9, 9, 10, 8, 1, 10

Offset

0,4

Comments

Same as A324078 with pairs after a(0) swapped.

Links

Michael De Vlieger, Table of n, a(n) for n = 0..10000

Example

1, 1 time term 1, 3 times term 1, 1 time term 3, 2 times term 3, 1 time term 2, 2 times terms 2, ...

Mathematica

Nest[Append[#, Reverse@ First@ SortBy[Union@ Tally[Flatten@ #], Last]] &, {{1}}, 52] // Flatten (* Michael De Vlieger, Feb 25 2019 *)

Crossrefs

Cf. A324078.

Sequence in context: A225335 A229166 A143159 * A184831 A033989 A307501

Adjacent sequences: A324076 A324077 A324078 * A324080 A324081 A324082

Keyword

nonn

Author

Joerg Arndt, Feb 15 2019

Status

approved