First element of first run of exactly n consecutive numbers not of form x^2+y^2.

Terms

a(0) =3a(1) =6a(2) =42a(3) =21a(4) =75a(5) =91a(6) =186a(7) =378a(8) =3051a(9) =987a(10) =1670a(11) =4182a(12) =6531a(13) =1494a(14) =8435a(15) =9705a(16) =22161a(17) =5166a(18) =16110a(19) =16869a(20) =154709a(21) =57099a(22) =31658a(23) =52394a(24) =401481a(25) =176811a(26) =101350a(27) =105573a(28) =678357a(29) =241883