Powers of sqrt(22) rounded up.

Terms

a(0) =1a(1) =5a(2) =22a(3) =104a(4) =484a(5) =2271a(6) =10648a(7) =49944a(8) =234256a(9) =1098759a(10) =5153632a(11) =24172677a(12) =113379904a(13) =531798889a(14) =2494357888a(15) =11699575549a(16) =54875873536a(17) =257390662068