

A334081


If the terms of this sequence are divided into groups, the lengths of which are the terms of this sequence, the kth term in a group is one greater than the kth term in the previous group with at least k terms or 1 if no such group exists.


1



1, 2, 1, 3, 4, 2, 1, 5, 3, 2, 1, 6, 4, 7, 8, 5, 3, 2, 1, 9, 6, 4, 10, 7, 11, 12, 8, 5, 3, 2, 1, 13, 9, 6, 4, 14, 10, 7, 5, 3, 2, 1, 15, 11, 8, 6, 4, 3, 2, 1, 16, 12, 9, 7, 5, 17, 13, 10, 18, 14, 19, 20, 15, 11, 8, 6, 4, 3, 2, 1, 21, 16, 12, 9, 7, 5, 22, 17, 13, 10, 23, 18, 14, 11, 8, 6, 4, 3, 2, 1
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OFFSET

1,2


LINKS

Samuel B. Reid, Table of n, a(n) for n = 1..10000
Samuel B. Reid, Python program for A334081


EXAMPLE


n a(n) nth Group

1 1 [1]
2 2 [2,1]
3 1 [3]
4 3 [4,2,1]
5 4 [5,3,2,1]
6 2 [6,4]
7 1 [7]
8 5 [8,5,3,2,1]
9 3 [9,6,4]


PROG

(Python) See Links section.


CROSSREFS

Cf. A000002, A332864.
Sequence in context: A004741 A133923 A341231 * A125158 A273823 A112384
Adjacent sequences: A334078 A334079 A334080 * A334082 A334083 A334084


KEYWORD

nonn,look,tabf


AUTHOR

Samuel B. Reid, Apr 14 2020


STATUS

approved



