A001417 Number of ways of folding a 2 X 2 X ... X 2 n-dimensional map.

1, 2, 8, 96, 4608, 798720, 361267200, 362794844160

Offset: 0

Author

N. J. A. Sloane

Keywords

• hard
• nonn
• nice
• more

References

• N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• W. F. Lunnon, Multi-dimensional map-folding, Computer Journal 14 1971 75-80.
• Index entries for sequences obtained by enumerating foldings

Crossrefs

Cf. A000136, A000560, A195646, A001418.

Extensions

a(7) from Sean A. Irvine, Dec 21 2017