The number of sigma-admissible subsets of {1,2,...,n} as defined by Marzuola-Miller.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =0a(6) =3a(7) =1a(8) =7a(9) =3a(10) =17a(11) =7a(12) =43a(13) =24a(14) =118a(15) =74a(16) =330a(17) =206a(18) =888a(19) =612a(20) =2571a(21) =1810a(22) =7274a(23) =5552a(24) =21099a(25) =16334a(26) =61252a(27) =49025a(28) =179239a(29) =146048