login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082039 Symmetric square array defined by T(n,k)=(k^2*n^2 + kn + 1), read by antidiagonals. 8
1, 1, 1, 1, 3, 1, 1, 7, 7, 1, 1, 13, 21, 13, 1, 1, 21, 43, 43, 21, 1, 1, 31, 73, 91, 73, 31, 1, 1, 43, 111, 157, 157, 111, 43, 1, 1, 57, 157, 241, 273, 241, 157, 57, 1, 1, 73, 211, 343, 421, 421, 343, 211, 73, 1, 1, 91, 273, 463, 601, 651, 601, 463, 273, 91, 1, 1, 111, 343, 601 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..69.

EXAMPLE

Rows begin

1 1 1 1 1 1 ...

1 3 7 13 21 31 ...

1 7 21 43 73 111 ...

1 13 43 91 157 241 ...

1 21 73 157 273 421 ...

CROSSREFS

Rows include A054569, A002061, A082040, A082041. Main diagonal is A059826.

Cf. A082038.

Sequence in context: A133800 A146900 A132733 * A176331 A157836 A205497

Adjacent sequences:  A082036 A082037 A082038 * A082040 A082041 A082042

KEYWORD

easy,nonn,tabl

AUTHOR

Paul Barry, Apr 02 2003

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 14:29 EDT 2019. Contains 328345 sequences. (Running on oeis4.)