Number of compositions (ordered partitions) of 2*n-1 into primes of form x^2 + y^2.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =3a(5) =4a(6) =6a(7) =9a(8) =15a(9) =24a(10) =37a(11) =58a(12) =92a(13) =149a(14) =243a(15) =393a(16) =629a(17) =1004a(18) =1603a(19) =2564a(20) =4106a(21) =6571a(22) =10508a(23) =16807a(24) =26895a(25) =43060a(26) =68952a(27) =110392a(28) =176696a(29) =282798