0,2

a(n)=(6*7^n+(-7)^n)/7 G.f. (1+5x)/((1+7x)(1-7x)) E.g.f. (6exp(7x)+exp(-7x))/7

Cf. A083223, A083225.

Sequence in context: A063429 A007406 A058927 this_sequence A093188 A155629 A096596

Adjacent sequences: A083221 A083222 A083223 this_sequence A083225 A083226 A083227

easy,nonn

Paul Barry (pbarry(AT)wit.ie), Apr 23 2003