Number of compositions (ordered partitions) of n such that some part is repeated consecutively 2 times and no part is repeated consecutively more than 2 times.
A091616
Number of compositions (ordered partitions) of n such that some part is repeated consecutively 2 times and no part is repeated consecutively more than 2 times.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =6a(4) =10a(5) =23a(6) =50a(7) =99a(8) =200a(9) =404a(10) =805a(11) =1599a(12) =3166a(13) =6225a(14) =12223a(15) =23934a(16) =46713a(17) =90995a(18) =176935a(19) =343395a(20) =665474a(21) =1287918a(22) =2489467a(23) =4806805a(24) =9272272a(25) =17870317a(26) =34414163a(27) =66226890a(28) =127365537a(29) =244803475
External references
- oeis: A091616