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A335821 Triangular array T(n, k) = n^2 - k^2, read by rows. 0
0, 1, 0, 4, 3, 0, 9, 8, 5, 0, 16, 15, 12, 7, 0, 25, 24, 21, 16, 9, 0, 36, 35, 32, 27, 20, 11, 0, 49, 48, 45, 40, 33, 24, 13, 0, 64, 63, 60, 55, 48, 39, 28, 15, 0, 81, 80, 77, 72, 65, 56, 45, 32, 17, 0, 100, 99, 96, 91, 84, 75, 64, 51, 36, 19, 0, 121, 120, 117, 112, 105, 96, 85, 72, 57, 40, 21, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
EXAMPLE
The triangle begins:
n\k 0 1 2 3 4 5 6 7 8 9
0 0
1 1 0
2 4 3 0
3 9 8 5 0
4 16 15 12 7 0
5 25 24 21 16 9 0
6 36 35 32 27 20 11 0
7 49 48 45 40 33 24 13 0
8 64 63 60 55 48 39 28 15 0
9 81 80 77 72 65 56 45 32 17 0
MATHEMATICA
Table[(n^2 - k^2), {n, 0, 11}, {k, 0, n}] // Flatten (* Michael De Vlieger, Jun 28 2020 *)
CROSSREFS
Sequence in context: A276576 A176214 A011091 * A354464 A136160 A268439
KEYWORD
nonn,tabl
AUTHOR
Mokhtar Mohamed, Jun 25 2020
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)