This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A127729 Primes of the form k# + (k+1)#,..,+(k+x)#+1; where k#,(k+1)#,(k+x)# are primorials numbers, members of A002110. 1
 7, 37, 2557, 32587, 543097, 10242787, 207263519017, 13394639596851067, 41295598995285955839203627497, 29987151430893484246716697508064240936086917614616072924464106966030597 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA prime(a)=A002110(n)+A002110(n+1)+...A002110(n+x) +1 EXAMPLE 7=A002110(3) +1 = 6+1;37= A002110(3)+A002110(4)+1 = 6+30+1; 2557= A002110(3)+A002110(4)+A002110(5)+A002110(6)+1= 6+30+210+2310 +1; 32587=A002110(3)+A002110(4)+A002110(5)+A002110(6)+A002110(7)+1=6+30+210+2310+30030+1 CROSSREFS Cf. A125191; A002110. Sequence in context: A210620 A250843 A078303 * A129736 A220852 A290176 Adjacent sequences:  A127726 A127727 A127728 * A127730 A127731 A127732 KEYWORD nonn AUTHOR Tomas Xordan, Apr 03 2007 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.

Last modified December 10 04:15 EST 2019. Contains 329885 sequences. (Running on oeis4.)