A179314 An irregular table of values refining Table A061260.

1, 2, 1, 3, 2, 1, 5, 3, 3, 2, 1, 7, 5, 6, 3, 3, 2, 1, 11, 7, 10, 6, 5, 6, 4, 3, 3, 2, 1, 15, 11, 14, 15, 7, 10, 6, 9, 5, 6, 4, 3, 3, 2, 1

Offset

1,2

Comments

The row sum sequence A001970 and Table A061260 count partitions of partitions.

Links

Table of n, a(n) for n=1..44.

Example

Row six Col three of A061260 can be derived from partitions 4+1+1, 3+2+1, and 2+2+2 yielding 5+6+4 = 15 cases.
Partition 2+2+2 yields four cases because we can write 2*3*4/3!=4.
1;
2, 1;
3, 2, 1;
5, 3, 3, 2, 1;
7, 5, 6, 3, 3, 2, 1;
11, 7, 10, 6, 5, 6, 4, 3, 3, 2, 1;
15, 11, 14, 15, 7, 10, 6, 9, 5, 6, 4, 3, 3, 2, 1;

Crossrefs

Cf. A000041 (shape sequence), A001970 (row sums), A055884 (has same row sums).

Sequence in context: A251721 A251722 A304100 * A204927 A119441 A347227

Adjacent sequences: A179311 A179312 A179313 * A179315 A179316 A179317

Keyword

nonn,tabf,uned

Author

Alford Arnold, Jul 19 2010

Status

approved