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A056386
Number of primitive (aperiodic) step shifted (decimated) sequences using exactly two different symbols.
1
0, 2, 4, 8, 10, 32, 26, 84, 98, 266, 214, 1200, 702, 2770, 4328, 8832, 8230, 44086, 29202, 135744, 176720, 419654, 381490, 2149068, 1678244, 5593294, 7461064, 22550600, 19175158, 134386396, 71585134
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. [See A056391 for pdf file of Chap. 2]
FORMULA
Sum mu(d)*A056376(n/d) where d divides n.
CROSSREFS
Sequence in context: A365002 A370663 A020950 * A331027 A210108 A217131
KEYWORD
nonn
STATUS
approved