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A056376 Number of step shifted (decimated) sequences using exactly two different symbols. 5
0, 2, 4, 10, 10, 38, 26, 94, 102, 278, 214, 1246, 702, 2798, 4342, 8926, 8230, 44222, 29202, 136030, 176750, 419870, 381490, 2150398, 1678254, 5593998, 7461166, 22553406, 19175158, 134391038, 71585134 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

See A056371 for an explanation of step shifts.

REFERENCES

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.

FORMULA

A056371(n)-2.

CROSSREFS

Cf. A056371.

Sequence in context: A173824 A097211 A092945 * A186757 A184876 A178713

Adjacent sequences:  A056373 A056374 A056375 * A056377 A056378 A056379

KEYWORD

nonn

AUTHOR

Marks R. Nester (nesterm(AT)dpi.qld.gov.au)

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Last modified February 16 23:45 EST 2012. Contains 205978 sequences.