A338491 - OEIS

%I #6 Oct 30 2020 22:56:50

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

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

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

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

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

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

%Y Cf. A005891, A100878, A101412, A234533, A338482, A338484, A338492, A338494.

%K nonn

%O 1,2

%A _Ilya Gutkovskiy_, Oct 30 2020