a(n) is the smallest nonnegative integer k where there are exactly n nonnegative integer solutions to x^2 + 2*y^2 = k.

A374285

a(n) is the smallest nonnegative integer k where there are exactly n nonnegative integer solutions to x^2 + 2*y^2 = k.

Terms

    a(0) =5a(1) =0a(2) =9a(3) =81a(4) =297a(5) =891a(6) =1683a(7) =8019a(8) =5049a(9) =18513a(10) =15147a(11) =88209a(12) =31977a(13) =1185921a(14) =136323a(15) =166617a(16) =95931a(17) =7144929a(18) =351747

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