3,1

Christian Sievers, Table of n, a(n) for n = 3..200

Eric Weisstein's World of Mathematics, Dipyramidal Graph.

Eric Weisstein's World of Mathematics, Maximal Irredundant Set.

Index entries for linear recurrences with constant coefficients, signature (2,0,-1,0,0,-1,0,0,2,2,-4,0,1,-1,2,-1).

G.f.: x^3*(4 + 7*x - 9*x^2 - 14*x^3 - 4*x^4 - 6*x^5 + 15*x^6 + 29*x^7 - 25*x^8 + 11*x^9 - 4*x^10 - 35*x^11 + 35*x^12 - 10*x^13 + 5*x^14 + 5*x^15 - 6*x^16)/((1 - x)^2*(1 - x^2 - x^3 - x^4 - x^5 + x^7 + 2*x^8 + x^9 - 2*x^10 - x^11 + x^14)). - Andrew Howroyd, May 29 2025

Cf. A297712.

Sequence in context: A301707 A100783 A170850 * A055465 A209870 A167293

Adjacent sequences: A297708 A297709 A297710 * A297712 A297713 A297714

nonn,easy

Eric W. Weisstein, Jun 18 2018

a(21)-a(30) from Andrew Howroyd, Jun 26 2018

More terms from Christian Sievers, Nov 14 2023

approved