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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051332 Euclid-Mullin sequence (A000945) with initial value a(1)=65537 instead of a(1)=2. 0
65537, 2, 5, 3, 7, 11, 61, 13, 120052642711, 157, 8837, 71, 3271, 31, 37, 19, 8597, 8868542017, 23, 149, 26443389827415776296437975011182059459845296976025400711, 97, 751, 17, 280121, 4999, 8797543, 12241, 29, 53, 197, 5659, 3109, 1063, 727915549 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..35.

MATHEMATICA

a[1]=65537; a[n_] := First[ Flatten[ FactorInteger[ 1+Product[ a[ j ], {j, 1, n-1} ] ] ] ]; Array[a, 10]

PROG

(PARI) spf(n)=my(f=factor(n)[1, 1]); f

first(m)=my(v=vector(m)); v[1]=65537; for(i=2, m, v[i]=spf(1+prod(j=1, i-1, v[j]))); v \\ Anders Hellström, Dec 07 2015

CROSSREFS

Cf. A000945, A000946, A005265, A005266.

Sequence in context: A013881 A027747 A255323 * A123388 A070816 A133864

Adjacent sequences:  A051329 A051330 A051331 * A051333 A051334 A051335

KEYWORD

easy,nonn

AUTHOR

Labos Elemer

EXTENSIONS

a(25)-a(35) from Robert Price, Jul 09 2015

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 9 02:36 EST 2016. Contains 278959 sequences.