Sum C(n,k)*b(k), k=1..n, where b(k) is given by A001861.

A029706

Sum C(n,k)*b(k), k=1..n, where b(k) is given by A001861.

Terms

    a(0) =2a(1) =10a(2) =46a(3) =226a(4) =1214a(5) =7106a(6) =44958a(7) =305090a(8) =2206398a(9) =16913986a(10) =136823262a(11) =1163490498a(12) =10366252030a(13) =96491364674a(14) =935976996126

External references