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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A057999 a(n) is smallest prime such that a(n)-1 is a proper multiple of a(n-1)-1 [with a(0)=2]. 1
2, 3, 5, 13, 37, 73, 433, 1297, 2593, 10369, 72577, 508033, 1524097, 12192769, 73156609, 146313217, 438939649, 2633637889, 23702740993, 142216445953, 1991030243329, 37829574623233, 416125320855553 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..22.

FORMULA

a(n)= Product{i=1_n}[A036012(i)]+1 =a(n-1)*A036012(n)+1-A036012(n)

CROSSREFS

Cf. A036012, A046966, A046972, A058000.

Sequence in context: A141179 A215314 A079147 * A013013 A087362 A038560

Adjacent sequences:  A057996 A057997 A057998 * A058000 A058001 A058002

KEYWORD

nonn

AUTHOR

Henry Bottomley, Nov 02 2000

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 July 19 12:35 EDT 2019. Contains 325159 sequences. (Running on oeis4.)