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!)
A090479 Beginning with 1, least number such that filling the first n gaps with numbers from 1 to n yields primes in every case. 1

%I

%S 1,3,1,9,61,1,1,31,23,39,163,29,21,47,57,13,7,221,39,73,89,63,743,451,

%T 461,111,243,73,203,31,11,417,171,147,23,191,27,37,241,1207,1003,143,

%U 191,243,279,247,331,233,947,107,169,673,301,2711,977,789,111,417,221

%N Beginning with 1, least number such that filling the first n gaps with numbers from 1 to n yields primes in every case.

%C Replacing the first n commas with numbers from 1 to n yields a prime for all n.

%e 113,11321,1132139,...are primes.

%Y Cf. A090480.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Dec 02 2003

%E 3 more terms from _Ray G. Opao_, Apr 07 2005

%E Many more terms from _David Wasserman_, Nov 17 2005

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 5 09:42 EST 2020. Contains 338945 sequences. (Running on oeis4.)