Square spiral in which each new term is the sum of its two largest neighbors.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =7a(6) =8a(7) =15a(8) =16a(9) =17a(10) =33a(11) =35a(12) =37a(13) =72a(14) =76a(15) =80a(16) =84a(17) =164a(18) =172a(19) =180a(20) =188a(21) =368a(22) =384a(23) =401a(24) =418a(25) =435a(26) =853a(27) =888a(28) =925a(29) =962