|
Search: id:A082405
|
|
|
| A082405 |
|
a(n) = 34*a(n-1) - a(n-2); a(0)=0, a(1)=6. |
|
+0
1
|
|
| 0, 6, 204, 6930, 235416, 7997214, 271669860, 9228778026, 313506783024, 10650001844790, 361786555939836, 12290092900109634, 417501372047787720, 14182756556724672846, 481796221556591089044, 16366888776367372354650
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
Sequence refers to inradius of primitive Pythagorean triangle with consecutive legs,even followed by odd.It has semiperimeter A046176(n+1), and area a(n)*A046176(n+1).
|
|
LINKS
|
Tanya Khovanova, Recursive Sequences
|
|
FORMULA
|
For n>1, a(n)/2 = A001652(2*n-1)-sum_{k=0...n-1}A001333(4*k); e.g. 6930/2 = 4059 - (17+577). - Charlie Marion (charliem(AT)bestweb.net), Jul 31 2003
a(n)=A001109(2n).
|
|
CROSSREFS
|
Cf. A046176.
Sequence in context: A109058 A003743 A115491 this_sequence A054653 A061540 A024083
Adjacent sequences: A082402 A082403 A082404 this_sequence A082406 A082407 A082408
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Lekraj Beedassy (blekraj(AT)yahoo.com), Apr 23 2003
|
|
EXTENSIONS
|
More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Sep 02 2004
|
|
|
Search completed in 0.002 seconds
|
