1,1

Is it difficult to prove that the sequence continues in the expected way?

Table of n, a(n) for n=1..8.

599 is in the sequence because (3*599)(3*599+3)/2 + 599(602)/2

= 1797*1800/2 + 599*602/2 = 1797599.

Cf. A096032, A099148, A099149, A099150.

Sequence in context: A106105 A178003 A036947 * A243219 A113055 A020468

Adjacent sequences: A099148 A099149 A099150 * A099152 A099153 A099154

nonn,base

John W. Layman, Sep 30 2004

Edited by Charles R Greathouse IV, Apr 29 2010

approved