|
Search: id:A143861
|
|
|
| A143861 |
|
Ulam/prime spiral (NNE). |
|
+0
1
|
|
| 1, 14, 59, 136, 245, 386, 559, 764, 1001, 1270, 1571, 1904, 2269, 2666, 3095, 3556, 4049, 4574, 5131, 5720, 6341, 6994, 7679, 8396, 9145, 9926, 10739, 11584, 12461, 13370, 14311, 15284, 16289, 17326, 18395, 19496, 20629, 21794, 22991, 24220
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
FORMULA
|
a(n)=16n^2-35n+20. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 08 2008]
|
|
MATHEMATICA
|
lst={1}; a=2; Do[AppendTo[lst, n*n-a]; a=a+3, {n, 4, 6!, 4}]; lst
|
|
CROSSREFS
|
Sequence in context: A063537 A084195 A033856 this_sequence A100174 A120371 A062022
Adjacent sequences: A143858 A143859 A143860 this_sequence A143862 A143863 A143864
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 03 2008
|
|
|
Search completed in 0.002 seconds
|
