login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A165657 Numerators of A002110 divided by A102647, starting from the second term of both. 3
2, 3, 15, 105, 385, 5005, 17017, 323323, 1062347, 30808063, 434113615, 35336848261, 1448810778701, 33545541876077, 266186053068611, 5426100312552455, 9156001667401012567, 42962777054727828199 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

PROG

(PARI) a1(n)=prod(i=1, n, prime(i)); b1(n)=prod(i=1, n, prime(n+1)%prime(i));

a(n)=if(n<0, 0, numerator(a1(n)/b1(n))); for(n=1, 20, print1(a(n) ", "))

CROSSREFS

Cf. A002110, A102647, A165658, A165659, A165660.

Sequence in context: A177012 A107413 A238711 * A091835 A131612 A297421

Adjacent sequences:  A165654 A165655 A165656 * A165658 A165659 A165660

KEYWORD

easy,nonn

AUTHOR

Creighton Dement, Sep 24 2009

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 21 21:43 EDT 2022. Contains 353929 sequences. (Running on oeis4.)