Values of s in Wolfram's iteration for sqrt(2).

Terms

a(0) =0a(1) =4a(2) =8a(3) =20a(4) =44a(5) =88a(6) =180a(7) =360a(8) =724a(9) =1448a(10) =2896a(11) =5792a(12) =11584a(13) =23168a(14) =46340a(15) =92680a(16) =185360a(17) =370724a(18) =741452a(19) =1482908a(20) =2965820a(21) =5931640a(22) =11863280a(23) =23726564a(24) =47453132a(25) =94906264a(26) =189812528a(27) =379625060a(28) =759250124a(29) =1518500248