A061174 Fifth column of Lucas bisection triangle (odd part).

15, 545, 7043, 57560, 365045, 1970905, 9520315, 42385132, 177293730, 705980760, 2701362950, 10001654350, 36020160943, 126701700755, 436709397085, 1478813477920, 4930328078835, 16212542696607

Offset

0,1

Comments

Numerator of g.f. is row polynomial sum(A061187(4,m)*x^m,m=0..7).

Links

Table of n, a(n) for n=0..17.

Formula

a(n)=A060924(n+4, 4).

G.f.: (3-2*x)*(16*x^6-56*x^5+181*x^4-306*x^3+171*x^2+110*x+5)/(1-3*x+x^2)^5.

Crossrefs

Cf. A002548, 2*A061171, A061172, 4*A061173.

Sequence in context: A077206 A171197 A351183 * A255956 A115918 A110840

Adjacent sequences: A061171 A061172 A061173 * A061175 A061176 A061177

Keyword

nonn,easy

Author

Wolfdieter Lang, Apr 20 2001

Status

approved