A308603 Number of (not necessarily maximal) cliques in the n-dipyramidal graph.

24, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177, 183, 189, 195, 201, 207, 213, 219, 225, 231, 237, 243, 249, 255, 261, 267, 273, 279, 285, 291, 297, 303

Offset

3,1

Links

Table of n, a(n) for n=3..50.

Eric Weisstein's World of Mathematics, Clique

Eric Weisstein's World of Mathematics, Dipyramidal Graph

Wikipedia, Clique

Formula

a(n) = 6*n+3 for n > 3.

Mathematica

Join[{24}, 6*Range[4, 50]+3] (* Harvey P. Dale, Jan 16 2023 *)

Crossrefs

Sequence in context: A071833 A064159 A141632 * A141634 A162465 A067193

Adjacent sequences: A308600 A308601 A308602 * A308604 A308605 A308606

Keyword

nonn,easy

Author

Eric W. Weisstein, Jun 10 2019

Status

approved