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A115980 Array read by rows distributing the values of A000712 (vertically) and A001519 (horizontally). 0
1, 2, 2, 3, 2, 4, 4, 3, 2, 4, 6, 5, 4, 6, 2, 4, 6, 8, 6, 3, 4, 4, 8, 9, 2, 4, 6, 8, 10, 7, 4, 12, 8, 4, 8, 12, 12, 2, 4, 6, 8, 10, 12, 8, 3, 6, 5, 4, 14, 21, 12, 4, 8, 12, 16, 15, 2, 4, 6, 8, 10, 12, 14, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
A001906 records the partial sums of the column sequence A001519 and is also the row sum of A078812 and of A085643; sequences linking a(n) to compositions of n having k parts when there are q kinds of part q. - Alford Arnold, Apr 30 2006
LINKS
EXAMPLE
The array begins:
1
..2
....2
....3
......2
......4..3
......4
.........2
.........4..4..3
.........6..6..4
.........5
with column sums beginning 1 2 5 10 20 ...A000712 related to A000041
and sums over each template beginning 1 2 5 13 34 ...A001519 related to A000045
CROSSREFS
Sequence in context: A266470 A371745 A209700 * A088936 A328405 A049822
KEYWORD
easy,nonn,tabf
AUTHOR
Alford Arnold, Feb 11 2006
STATUS
approved

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Last modified July 19 19:50 EDT 2024. Contains 374436 sequences. (Running on oeis4.)