A295189 Chromatic invariant of the n-Sierpinski sieve graph.

1, 1, 27, 20346417, 505719202397835049370570187

Offset

1,3

Links

Andrew Howroyd, Table of n, a(n) for n = 1..6

Eric Weisstein's World of Mathematics, Chromatic Invariant.

Eric Weisstein's World of Mathematics, Sierpinski Sieve Graph.

Crossrefs

Cf. A193277.

Sequence in context: A050650 A106536 A227115 * A365482 A243105 A023925

Adjacent sequences: A295186 A295187 A295188 * A295190 A295191 A295192

Keyword

nonn

Author

Eric W. Weisstein, Nov 16 2017

Extensions

a(5) onwards from Andrew Howroyd, Aug 08 2024

Status

approved