A290346 Numerators of the Kirchhoff sum index for the n-hypercube graph.

0, 1, 4, 227, 334, 96661, 140663, 10194871, 30803116, 6854577137, 10830776629, 4228148644729, 3474650044156, 7849737483616471

Offset

0,3

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. A290345 (denominators).

Sequence in context: A381723 A182484 A159281 * A113255 A145767 A206352

Adjacent sequences: A290343 A290344 A290345 * A290347 A290348 A290349

Keyword

nonn,more,frac

Author

Eric W. Weisstein, Jul 28 2017

Status

approved