A143779 Numbers of the form k=k^2-n^2.

0, -1, -3, 0, -16, 231, 53325, 2843555576, 8085808313800691712, 65380296087528385371720710929665490863, 4274583116492879495671558465604382082843695840997226026463670361542736484669

Offset

1,3

Links

Table of n, a(n) for n=1..11.

Formula

n=0, 1, 2,3, 4, 5, 6,... k=0,-1.-3,0,-16,231,53325,... k=k^2-n^2

Mathematica

lst={}; k=0; Do[k=k^2-n^2; AppendTo[lst, k], {n, 0, 12}]; lst

Crossrefs

Sequence in context: A290580 A038122 A359862 * A240244 A036968 A226158

Adjacent sequences: A143776 A143777 A143778 * A143780 A143781 A143782

Keyword

sign

Author

Vladimir Joseph Stephan Orlovsky, Aug 31 2008

Status

approved