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A166373 Triangle read by rows for floor(j^2 / n) with n >= 2 and 1<=j<n. 5
0, 0, 1, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1, 2, 4, 0, 0, 1, 2, 3, 5, 0, 0, 1, 2, 3, 4, 6, 0, 0, 1, 1, 2, 4, 5, 7, 0, 0, 0, 1, 2, 3, 4, 6, 8, 0, 0, 0, 1, 2, 3, 4, 5, 7, 9, 0, 0, 0, 1, 2, 3, 4, 5, 6, 8, 10, 0, 0, 0, 1, 1, 2, 3, 4, 6, 7, 9, 11, 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8, 10, 12, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 9 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
2,6
LINKS
EXAMPLE
Part of the triangle from which the sequence is constructed is shown below.
.....j..1..2..3..4..5..6..7..8..9.10.11.12.13.14
...n
...2....0
...3....0..1
...4....0..1..2
...5....0..0..1..3
...6....0..0..1..2..4
...7....0..0..1..2..3..5
...8....0..0..1..2..3..4..6
...9....0..0..1..1..2..4..5..7
..10....0..0..0..1..2..3..4..6..8
..11....0..0..0..1..2..3..4..5..7..9
..12....0..0..0..1..2..3..4..5..6..8.10
..13....0..0..0..1..1..2..3..4..6..7..9.11
..14....0..0..0..1..1..2..3..4..5..7..8.10.12
..15....0..0..0..1..1..2..3..4..5..6..8..9.11.13
PROG
(PARI) T(n, j)=j^2\n \\ Charles R Greathouse IV, Jan 16 2012
CROSSREFS
A165974 is contained in this sequence.
Cf. A166381 (column sums), A166375 (row sums).
Sequence in context: A182114 A122950 A116489 * A202451 A238727 A056885
KEYWORD
nonn,easy,tabl
AUTHOR
Christopher Hunt Gribble, Oct 13 2009. Offset corrected Oct 18 2009.
STATUS
approved

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Last modified March 18 22:50 EDT 2024. Contains 370951 sequences. (Running on oeis4.)