Number of compositions of n such that every part divides the largest part.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =14a(6) =26a(7) =45a(8) =79a(9) =137a(10) =241a(11) =423a(12) =754a(13) =1343a(14) =2410a(15) =4344a(16) =7870a(17) =14305a(18) =26103a(19) =47763a(20) =87649a(21) =161229a(22) =297251a(23) =549108a(24) =1016243a(25) =1883898a(26) =3497761a(27) =6503420a(28) =12107958a(29) =22570221