cp's OEIS Frontend

A354576 Variant of A253028 using only odd numbers: a mirror symmetric array of odd numbers where the n-th term is equal to the number of terms in the n-th row of the array.

%I A354576 #14 Nov 11 2023 08:50:26
%S A354576 1,3,1,5,7,9,3,1,5,11,13,7,3,1,5,9,15,17,11,7,3,1,5,9,13,19,21,15,23,
%T A354576 25,27,17,11,19,29,31,21,13,7,3,1,5,9,15,23,33,35,25,17,11,7,3,1,5,9,
%U A354576 13,19,27,37,39,29,21,15,23,31,41
%N A354576 Variant of A253028 using only odd numbers: a mirror symmetric array of odd numbers where the n-th term is equal to the number of terms in the n-th row of the array.
%C A354576 See the examples in A253028 for a detailed illustration of how the array is constructed.
%H A354576 Neal Gersh Tolunsky, <a href="/A354576/b354576.txt">Table of n, a(n) for n = 1..10000</a>
%H A354576 Rémy Sigrist, <a href="/A354576/a354576.gp.txt">PARI program</a>
%e A354576 1.......................1
%e A354576 2.....................3,1,5
%e A354576 3.......................7
%e A354576 4...................9,3,1,5,11
%e A354576 5................13,7,3,1,5,9,15
%e A354576 6.............17,11,7,3,1,5,9,13,19
%e A354576 7................... 21,15,23
%e A354576 8...................... 25
%e A354576 9.................27,17,11,19,29
%e A354576 10.........31,21,13,7,3,1,5,9,15,23,33
%e A354576 11......35,25,17,11,7,3,1,5,9,13,19,27,37
%e A354576 12.............39,29,21,15,23,31,41
%o A354576 (PARI) See Links section.
%Y A354576 Cf. A253028, A354577.
%K A354576 nonn,tabf
%O A354576 1,2
%A A354576 _Felix Fröhlich_, May 30 2022