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!)
A205140 Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=j(3j-1)/2, the j-th pentagonal number. 2

%I #9 Apr 09 2015 16:35:05

%S 5,5,22,5,22,35,12,51,145,22,12,70,35,92,35,51,22,145,70,92,22,92,35,

%T 70,51,247,1162,117,51,35,176,715,117,35,70,145,247,477,51,92,92,176,

%U 330,330,247,51,117,70,247,51,247,330,145,1247,145,117,92,70

%N Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=j(3j-1)/2, the j-th pentagonal number.

%C For a guide to related sequences, see A204892.

%t (See the program at A205138.)

%Y Cf. A204892, A205138.

%K nonn

%O 1,1

%A _Clark Kimberling_, Jan 25 2012

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 April 16 12:05 EDT 2024. Contains 371711 sequences. (Running on oeis4.)