a(n) = (Lucas(8*n) - 2)/45.A049682a(n) = (Lucas(8*n) - 2)/45.Terms a(0) =0a(1) =1a(2) =49a(3) =2304a(4) =108241a(5) =5085025a(6) =238887936a(7) =11222647969a(8) =527225566609External referencesoeis: A049682