A027668 Number of independent subsets of nodes of 4^n cube (P_4 X ... X P_4).

2, 8, 1234, 121039421240

Offset

0,1

Links

Table of n, a(n) for n=0..3.

Crossrefs

Cf. A027624 (P_2), A027667 (P_3).

Sequence in context: A084148 A014115 A014116 * A121015 A216619 A306241

Adjacent sequences: A027665 A027666 A027667 * A027669 A027670 A027671

Keyword

nonn,hard,more

Author

R. H. Hardin

Extensions

a(0) corrected by Sean A. Irvine, Nov 16 2019

Status

approved