A075994 Irregular triangle T(n,k) = floor(n/k) for k = 1, 2, ..., floor(n/2) for n>=2 and T(1,1)=1.

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

Offset

1,2

Comments

This triangle is obtained by deleting from A010766 all 1's except for the first.

Row sums: A075995.

Links

Table of n, a(n) for n=1..97.

Example

Irregular triangle starts:
1
2
3
4 2
5 2
6 3 2

Crossrefs

Cf. A010766, A075995.

Sequence in context: A366296 A191248 A323156 * A305893 A325980 A366122

Adjacent sequences: A075991 A075992 A075993 * A075995 A075996 A075997

Keyword

nonn,tabf

Author

Clark Kimberling, Sep 28 2002

Extensions

Edited by Georg Fischer, Oct 25 2021

Status

approved