0,2

Transform of 2^n under Riordan array A101603.

G.f.: 1/((1+x)(1-3x-2x^2)); a(n)=(3/4+sqrt(17)/4)^n*(1/4+7sqrt(17)/68)+(1/4-7sqrt(17)/68)(3/4-sqrt(17)/4)^n+(-1)^n/2; a(n)=(A007483(n)+(-1)^n)/2.

Adjacent sequences: A101601 A101602 A101603 this_sequence A101605 A101606 A101607

Sequence in context: A056778 A056288 A056283 this_sequence A084652 A002774 A109770

easy,nonn

Paul Barry (pbarry(AT)wit.ie), Dec 08 2004