0,3

Convolution of Jacobsthal numbers A001045 and modified Jacobsthal-Lucas numbers (in A014551, change the leading 2 to a 1).

G.f.: x(1+2x^2)/(1-x-2x^2)^2; a(n)=n2^n/3-n(-1)^n/3.

Cf. A023607.

Sequence in context: A014107 A090398 A091941 this_sequence A041007 A002360 A100516

Adjacent sequences: A093832 A093833 A093834 this_sequence A093836 A093837 A093838

nonn

Paul Barry (pbarry(AT)wit.ie), Apr 20 2004