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!)
A095831 Triangle read by rows: T(n,k) = (n-k)^2, n>=1, 1<=k<=n. 1
0, 1, 0, 4, 1, 0, 9, 4, 1, 0, 16, 9, 4, 1, 0, 25, 16, 9, 4, 1, 0, 36, 25, 16, 9, 4, 1, 0, 49, 36, 25, 16, 9, 4, 1, 0, 64, 49, 36, 25, 16, 9, 4, 1, 0, 81, 64, 49, 36, 25, 16, 9, 4, 1, 0, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1, 0, 121, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1, 0, 144, 121, 100, 81 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Alternating row sums give A000217. - Omar E. Pol, Jan 26 2014
Row sums give A000330. - Omar E. Pol, Jan 27 2014
LINKS
EXAMPLE
From Omar E. Pol, Jan 27 2011: (Start)
0;
1, 0;
4, 1, 0;
9, 4, 1, 0;
16, 9, 4, 1, 0;
25, 16, 9, 4, 1, 0;
36, 25, 16, 9, 4, 1, 0;
49, 36, 25, 16, 9, 4, 1, 0;
64, 49, 36, 25, 16, 9, 4, 1, 0;
81, 64, 49, 36, 25, 16, 9, 4, 1, 0;
100, 81, 64, 49, 36, 25, 16, 9, 4, 1, 0;
...
For n = 8 the row sum is 49 + 36 + 25 + 16 + 9 + 4 + 1 + 0 = A000330(8-1) = 140. The alternating row sum is 49 - 36 + 25 - 16 + 9 - 4 + 1 - 0 = A000217(8-1) = 28.
(End)
CROSSREFS
Cf. A055461.
Sequence in context: A152420 A050465 A134575 * A277531 A284982 A089962
KEYWORD
easy,nonn,tabl
AUTHOR
Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 10 2004
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 06:57 EDT 2024. Contains 371265 sequences. (Running on oeis4.)