login
Least number of centered heptagonal numbers needed to represent n.
2

%I #4 Oct 30 2020 22:56:57

%S 1,2,3,4,5,6,7,1,2,3,4,5,6,7,8,2,3,4,5,6,7,1,2,3,4,5,6,7,8,2,3,4,5,6,

%T 7,8,9,3,4,5,6,7,1,2,3,4,5,6,7,8,2,3,4,5,6,7,8,9,3,4,5,6,7,8,2,3,4,5,

%U 6,7,1,2,3,4,5,6,7,8,2,3,4,5,6,7,8,2,3,4,5,6,7,8,2,3,4,5,6,7,8,9,3

%N Least number of centered heptagonal numbers needed to represent n.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CenteredPolygonalNumber.html">Centered Polygonal Numbers</a>

%H <a href="/index/Ce#CENTRALCUBE">Index entries for sequences related to centered polygonal numbers</a>

%Y Cf. A069099, A101412, A234533, A338480, A338482, A338484, A338491.

%K nonn

%O 1,2

%A _Ilya Gutkovskiy_, Oct 30 2020