Number of compositions of n where the difference between largest and smallest parts equals 2 and adjacent parts are unequal.

A214271

Number of compositions of n where the difference between largest and smallest parts equals 2 and adjacent parts are unequal.

Terms

    a(0) =0a(1) =2a(2) =1a(3) =8a(4) =7a(5) =13a(6) =25a(7) =27a(8) =43a(9) =71a(10) =85a(11) =124a(12) =186a(13) =260a(14) =346a(15) =509a(16) =716a(17) =1002a(18) =1434a(19) =1989a(20) =2829a(21) =4051a(22) =5693a(23) =8043a(24) =11459a(25) =16240a(26) =23028a(27) =32780a(28) =46497a(29) =66031

External references