login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A352242 Regular triangle T(n,k) = (n-k)*(n^3-k^3) for n>=2 and 1 <= k <= n-1, read by rows. 3
7, 52, 19, 189, 112, 37, 496, 351, 196, 61, 1075, 832, 567, 304, 91, 2052, 1675, 1264, 837, 436, 127, 3577, 3024, 2425, 1792, 1161, 592, 169, 5824, 5047, 4212, 3325, 2416, 1539, 772, 217, 8991, 7936, 6811, 5616, 4375, 3136, 1971, 976, 271, 13300, 11907, 10432, 8869, 7236, 5575, 3952, 2457, 1204, 331 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
Michael De Vlieger, Table of n, a(n) for n = 2..11176 (rows n = 2..150, flattened)
EXAMPLE
Triangle begins:
7;
52, 19;
189, 112, 37;
496, 351, 196, 61;
1075, 832, 567, 304, 91;
2052, 1675, 1264, 837, 436, 127;
...
MATHEMATICA
Table[(n - k) (n^3 - k^3), {n, 2, 11}, {k, n - 1}] // Flatten (* Michael De Vlieger, Mar 09 2022 *)
PROG
(PARI) row(n) = vector(n-1, k, (n-k)*(n^3-k^3));
CROSSREFS
Cf. A003215 (right diagonal), A138849 (left border).
Sequence in context: A220224 A198007 A156751 * A138849 A057675 A206809
KEYWORD
nonn,tabl
AUTHOR
Michel Marcus, Mar 09 2022
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)