Number of compositions of the integer n with strictly smallest part in the first position.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =5a(6) =8a(7) =12a(8) =19a(9) =28a(10) =45a(11) =70a(12) =110a(13) =173a(14) =275a(15) =436a(16) =695a(17) =1107a(18) =1769a(19) =2831a(20) =4537a(21) =7276a(22) =11683a(23) =18774a(24) =30194a(25) =48592a(26) =78247a(27) =126062a(28) =203192a(29) =327645