login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A070232 a(1) = 4; a(n) = smallest composite number greater than the sum of all previous terms. 0
4, 6, 12, 24, 48, 95, 190, 380, 760, 1520, 3040, 6080, 12160, 24320, 48640, 97280, 194560, 389120, 778240, 1556480, 3112960, 6225920, 12451840, 24903680, 49807360, 99614720, 199229440, 398458880, 796917760, 1593835520, 3187671040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = 95*2^(n-6) for n > 5.

LINKS

Table of n, a(n) for n=1..31.

MATHEMATICA

a = {4}; Do[b = 1 + Plus @@ a; While[ PrimeQ[b], b++ ]; a = Append[a, b], {n, 2, 30}]; a

CROSSREFS

Cf. A070218.

Sequence in context: A308471 A095416 A162688 * A037100 A095969 A090608

Adjacent sequences:  A070229 A070230 A070231 * A070233 A070234 A070235

KEYWORD

nonn

AUTHOR

Amarnath Murthy, May 05 2002

EXTENSIONS

Edited by Robert G. Wilson v, May 06 2002

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 August 18 08:57 EDT 2019. Contains 326077 sequences. (Running on oeis4.)