0,2

After the first term, all terms seem to be a multiple of 9.

A083352(x)=1 + 3x + 9x^2 + 9x^3 + 3x^4 + 15x^5 + 33x^6 +...; so that A(x) =

A083352(x)^2 + A083352(x) - 1 = 1 + 9x + 36x^2 + 81x^3 + 144x^4 + 225x^5 +...

Cf. A083352, A083354 (square-root of terms).

Sequence in context: A077115 A073946 A016766 this_sequence A083014 A001487 A009522

Adjacent sequences: A083350 A083351 A083352 this_sequence A083354 A083355 A083356

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Apr 26 2003