Sum of squares of octanacci numbers (Fibonacci 8-step numbers).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =2a(9) =6a(10) =22a(11) =86a(12) =342a(13) =1366a(14) =5462a(15) =21846a(16) =86871a(17) =345952a(18) =1378208a(19) =5490992a(20) =21877296a(21) =87163696a(22) =347276080a(23) =1383600944a(24) =5512434480a(25) =21962292529a(26) =87500852554a(27) =348615720590