0,4

a(n)=3a(n-1)+6a(n-2)-8a(n-3).

a(n)=1/9-(2/9)*(-2)^n+(1/9)*4^n, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Jun 12 2008

Cf. A001019, First differences give (apart from signs) A083086.

Sequence in context: A084058 A108570 A092769 this_sequence A146365 A146373 A084605

Adjacent sequences: A139815 A139816 A139817 this_sequence A139819 A139820 A139821

nonn

Paul Curtz (bpcrtz(AT)free.fr), May 17 2008