Number of integer partitions of n without an alternating permutation.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =2a(6) =5a(7) =5a(8) =8a(9) =11a(10) =17a(11) =20a(12) =29a(13) =37a(14) =51a(15) =65a(16) =85a(17) =106a(18) =141a(19) =175a(20) =223a(21) =277a(22) =351a(23) =432a(24) =540a(25) =663a(26) =820a(27) =999a(28) =1226a(29) =1489