|
Search: id:A099175
|
|
|
| A099175 |
|
a(1) = 1, a(2) = 8; for n > 2: a(n) = a(n-1)*(3*a(n-1)-2). |
|
+0
2
|
|
| 1, 8, 176, 92576, 25710762176, 1983129874961075240576, 11798412302889389755255045998938726679954176, 41760759860691513979241646557898520269617598956731671315669422930200726005424701\ 9608576
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
n*(3n-2) is the n-th octogonal number.
|
|
MATHEMATICA
|
Join[{1}, NestList[ #*(3*# - 2) &, 8, 7]]
|
|
CROSSREFS
|
Sequence in context: A024109 A027464 A064342 this_sequence A000839 A001596 A159326
Adjacent sequences: A099172 A099173 A099174 this_sequence A099176 A099177 A099178
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 15 2004
|
|
EXTENSIONS
|
Edited by Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jul 25 2007
|
|
|
Search completed in 0.002 seconds
|
