|
%I #25 May 31 2020 05:50:09
%S 45,69,119,219,357,575,871,1301,1815,2543,3435,4635,6023,7731,9727,
%T 12259,15087,18585,22543,27165,32215,38239,44899,52631,60979,70465,
%U 80815,92749,105511,120079,135867,153331,171851,192311,214159,238583,264323,292371,322171
%N The number of vertices inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points.
%C See the links in A331455 for images of the crosses.
%H Lars Blomberg, <a href="/A330850/b330850.txt">Table of n, a(n) for n = 2..50</a>
%Y Cf. A331455 (regions), A330848 (n-gons), A330851 (edges), A333035 (cross with equal length arms).
%K nonn
%O 2,1
%A _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 07 2020
%E Corrected offset and a(11) and beyond from _Lars Blomberg_, May 31 2020
|
