A258208 - OEIS

%I #9 Aug 02 2015 17:52:58

%S 1,1,3,1,3,5,1,3,7,7,1,3,7,9,9,1,3,7,9,13,11,1,3,7,9,13,15,13,1,3,7,9,

%T 13,15,19,15,1,3,7,9,13,15,21,21,17,1,3,7,9,13,15,21,25,25,19,1,3,7,9,

%U 13,15,21,25,27,27,21,1,3,7,9,13,15,21,25,31,31,31,23,1,3,7,9,13,15,21,25,31,33,33,33,25,1,3,7,9,13,15,21,25,31,33,37,37,37,27,1,3,7,9,13,15,21,25,31,33,37,43,43,39,29

%N Transpose of array A258207 which gives the numbers remaining after the stage n of Lucky sieve.

%C See comments in A258207.

%H <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a>

%e The top left corner of the array:

%e    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1

%e    3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3

%e    5,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7

%e    7,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9

%e    9, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13

%e   11, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15

%e   13, 19, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21

%e   15, 21, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25

%e   17, 25, 27, 31, 31, 31, 31, 31, 31, 31, 31, 31

%e   19, 27, 31, 33, 33, 33, 33, 33, 33, 33, 33, 33

%e   21, 31, 33, 37, 37, 37, 37, 37, 37, 37, 37, 37

%e   23, 33, 37, 43, 43, 43, 43, 43, 43, 43, 43, 43

%e   ...

%o (Scheme)

%o (define (A258208 n) (A258207bi (A004736 n) (A002260 n)))

%o ;; Other code as in A258207.

%Y Transpose of A258207.

%Y Main diagonal: A000959 (the Lucky numbers).

%K nonn,tabl

%O 1,3

%A _Antti Karttunen_, Jul 27 2015