A030768 The second list after the following procedure: starting with a list [2] and an empty list, repeatedly add the distinct values already in both lists in descending order to the second list and add the corresponding frequencies of those values to the first list.

2, 2, 1, 2, 1, 4, 3, 2, 1, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 15, 13, 12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 18, 16, 15, 13, 12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 21, 19, 18, 16, 15, 13, 12, 11, 10, 9, 8

Offset

1,1

Links

Table of n, a(n) for n=1..80.

Crossrefs

The 1st list is A030767.

Sequence in context: A109909 A254573 A144387 * A051480 A071572 A172176

Adjacent sequences: A030765 A030766 A030767 * A030769 A030770 A030771

Keyword

nonn

Author

Clark Kimberling

Extensions

Name revised in line with A030778 by Peter Munn, Oct 09 2022

Status

approved