%I #9 Oct 25 2019 04:58:29

%S 1,3,10,25,71,166,444,1002,2601,5742,14653,31864,80472,173077,434243,

%T 926144,2313939,4902478,12216163,25743143,64042535,134356858,

%U 333927795,697932219,1733779702,3612110059,8971527052,18639230426

%N a(n) = Sum_{k=0..n} (k+1) * A026747(n, k).

%K nonn

%O 0,2

%A _Clark Kimberling_