Number of integer partitions of n such that, for all parts x, x - 1 or x + 1 is also a part.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =3a(6) =3a(7) =6a(8) =6a(9) =10a(10) =11a(11) =16a(12) =18a(13) =25a(14) =30a(15) =38a(16) =47a(17) =59a(18) =74a(19) =90a(20) =112a(21) =136a(22) =171a(23) =203a(24) =253a(25) =299a(26) =372a(27) =438a(28) =536a(29) =631