This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A166373 Triangle read by rows for floor(j^2 / n) with n >= 2 and  1<=j
 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 Adjacent sequences:  A166370 A166371 A166372 * A166374 A166375 A166376 KEYWORD nonn,easy,tabl AUTHOR Christopher Hunt Gribble, Oct 13 2009. Offset corrected Oct 18 2009. STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.