Number of glycols with n carbon atoms.

Terms

a(0) =1a(1) =2a(2) =6a(3) =14a(4) =38a(5) =97a(6) =260a(7) =688a(8) =1856a(9) =4994a(10) =13550a(11) =36791a(12) =100302a(13) =273824a(14) =749316a(15) =2053247a(16) =5635266a(17) =15484532a(18) =42599485a(19) =117312742a(20) =323373356a(21) =892139389a(22) =2463252315a(23) =6806148956a(24) =18818714543a(25) =52065725034a(26) =144135111504a(27) =399232819042