In case there was more than one solution with minimum A090548(n), the one with minimum stride A090549(n) was selected to generate A090547(n) and A090549(n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 28 2007
FORMULA
A090548(n)=A090547(n)+(n-1)*a(n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 28 2007