Tribonacci numbers which can be written in the form a^2 + b^2.

A216670

Tribonacci numbers which can be written in the form a^2 + b^2.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =13a(5) =81a(6) =149a(7) =274a(8) =3136a(9) =10609a(10) =35890a(11) =755476a(12) =1389537a(13) =4700770a(14) =1132436852a(15) =80641778674

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