Kim-sums: "Kimberling sums" K_n + K_4.

Terms

a(0) =3a(1) =10a(2) =13a(3) =15a(4) =18a(5) =21a(6) =23a(7) =26a(8) =28a(9) =31a(10) =34a(11) =36a(12) =39a(13) =42a(14) =44a(15) =47a(16) =49a(17) =52a(18) =55a(19) =57a(20) =60a(21) =62a(22) =65a(23) =68a(24) =70a(25) =73a(26) =76a(27) =78a(28) =81a(29) =83