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!)
A277460 Decades with the same semiprime pattern as the previous decade. 2

%I #10 Oct 17 2016 02:19:50

%S 103,388,434,437,528,657,883,1109,1182,1532,1547,1556,1668,1798,1823,

%T 1824,1914,1992,2010,2075,2084,2152,2312,2354,2371,2616,2627,2647,

%U 2672,3203,3233,3257,3279,3294,3372,3414,3512,3600,3635,3905,3930,3935,4124,4153

%N Decades with the same semiprime pattern as the previous decade.

%F a(n) = A220063(n)-1.

%F a(n) = A277459(n)+1.

%e a(1)=103 because the decade from 1020 to 1029 has the same semiprime pattern as the decade from 1030 to 1039 (1027 and 1037).

%Y Cf. A220063, A277459.

%K nonn

%O 1,1

%A _Bobby Jacobs_ and _N. J. A. Sloane_, Oct 16 2016

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 27 19:34 EDT 2024. Contains 372020 sequences. (Running on oeis4.)