Smallest number k such that R(n) + k is a square, where R(n) = A002275.

Terms

a(0) =0a(1) =5a(2) =10a(3) =45a(4) =125a(5) =445a(6) =1914a(7) =4445a(8) =1570a(9) =44445a(10) =156989a(11) =444445a(12) =941538a(13) =4444445a(14) =9826365a(15) =44444445a(16) =139362425a(17) =444444445a(18) =1287131805a(19) =4444444445a(20) =2222074045a(21) =44444444445a(22) =11388893810a(23) =444444444445