|
Search: id:A083203
|
|
|
| A083203 |
|
a(1) = 1, then smallest number not included earlier such that a(n)*a(n+1) + 1 is a cube. |
|
+0
8
|
|
| 1, 7, 9, 38, 35, 117, 91, 8, 614, 39312, 167143, 9225632, 27823518, 3438671571811, 810534219404852834, 350099109163999874259659131507909, 538073411436415103320989698699207584507533583587852139
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
The next 3 terms are (to 2 significant digits) 4.1*10^95, 1.3*10^183, 3.6*10^351.
|
|
EXAMPLE
|
7*9 + 1 = 64 = 8^3, 9*38 + 1 = 343= 7^3.
|
|
CROSSREFS
|
Cf. A083204, A082536.
Cf. A091569.
Sequence in context: A147186 A131623 A032011 this_sequence A082536 A057590 A140787
Adjacent sequences: A083200 A083201 A083202 this_sequence A083204 A083205 A083206
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 28 2003
|
|
EXTENSIONS
|
Corrected and extended by Vladeta Jovovic (vladeta(AT)eunet.rs), May 01 2003
More terms from Michel ten Voorde (seqfan(AT)tenvoorde.org) Jun 23 2003
More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 29 2003
a(15) - a(17) from David Wasserman (wasserma(AT)spawar.navy.mil), Mar 18 2004
More terms from David Wasserman (wasserma(AT)spawar.navy.mil), May 20 2004
|
|
|
Search completed in 0.002 seconds
|
