A290345 Denominators of the Kirchhoff sum index for the n-hypercube graph.

1, 1, 1, 18, 9, 900, 450, 11025, 11025, 793800, 396900, 48024900, 12006225, 8116208100

Offset

0,4

Links

Table of n, a(n) for n=0..13.

Eric Weisstein's World of Mathematics, Hypercube Graph

Eric Weisstein's World of Mathematics, Kirchhoff Sum Index

Example

First few Kirchhoff sum indices are 0, 1, 4, 227/18, 334/9, 96661/900, 140663/450, 10194871/11025, ....

Crossrefs

Cf. A290346 (numerators).

Sequence in context: A033965 A146415 A089517 * A035616 A355238 A244093

Adjacent sequences: A290342 A290343 A290344 * A290346 A290347 A290348

Keyword

nonn,more,frac

Author

Eric W. Weisstein, Jul 28 2017

Status

approved