Number of permutations of n elements divided by the number of 6-ary heaps on n+1 elements.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =3a(9) =4a(10) =5a(11) =6a(12) =7a(13) =14a(14) =21a(15) =28a(16) =35a(17) =42a(18) =49a(19) =98a(20) =147a(21) =196a(22) =245a(23) =294a(24) =343a(25) =686a(26) =1029a(27) =1372a(28) =1715a(29) =2058