Where records occur in A181157.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =22a(5) =46a(6) =106a(7) =406a(8) =826a(9) =2386a(10) =5950a(11) =12466a(12) =37990a(13) =141262a(14) =577486