a(n) = (1/2+1/2*I*sqrt(11))^n + (1/2-1/2*I*sqrt(11))^n. 1, 5, 8, 7, 31, 10, 83, 113, 136, 475, 67, 1358, 1559, 2515, 7192, 353
1 seqfan posts