Square root of A003462, rounded up.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =11a(5) =20a(6) =34a(7) =58a(8) =100a(9) =172a(10) =298a(11) =516a(12) =893a(13) =1547a(14) =2679a(15) =4640a(16) =8036a(17) =13918a(18) =24107a(19) =41754a(20) =72320a(21) =125262a(22) =216960a(23) =375786a(24) =650880a(25) =1127357a(26) =1952639a(27) =3382070a(28) =5857917a(29) =10146210