login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A048122 a(1) = 1, a(2) = 2, a(n) = a(n-1)^3 - a(n-2)^3. 1
1, 2, 7, 335, 37595032, 53136308104856854277393, 150028625136232090492356612601560283583272160844416809510162344944689 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Next terms are 205 and 614 digits long.

LINKS

Table of n, a(n) for n=1..7.

MATHEMATICA

RecurrenceTable[{a[1]==1, a[2]==2, a[n]==a[n-1]^3-a[n-2]^3}, a, {n, 8}] (* Harvey P. Dale, Mar 20 2013 *)

CROSSREFS

Cf. A048112.

Sequence in context: A137666 A137665 A128466 * A144787 A118910 A081505

Adjacent sequences:  A048119 A048120 A048121 * A048123 A048124 A048125

KEYWORD

nonn,easy

AUTHOR

David Johnson-Davies

EXTENSIONS

More terms from Patrick De Geest, Jun 15 1999

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 2 03:22 EST 2020. Contains 338865 sequences. (Running on oeis4.)