Number of chiral orthoplex n-ominoes in n-2 space.

Terms

a(0) =0a(1) =0a(2) =4a(3) =14a(4) =37a(5) =110a(6) =324a(7) =888a(8) =2368a(9) =6336a(10) =16874a(11) =44414a(12) =116181a(13) =303362a(14) =790157a(15) =2051880a(16) =5317599a(17) =13764133a(18) =35586766a(19) =91910082a(20) =237183164a(21) =611701614a(22) =1576773162a(23) =4062606255a(24) =10463699696a(25) =26942811809a(26) =69358469092