login
A056377
Number of step shifted (decimated) sequences using exactly three different symbols.
2
0, 0, 3, 21, 39, 288, 309, 1659, 3102, 14148, 17157, 136227, 130995, 790128, 1791489, 5427597, 8047839, 64467180, 64486017, 437324331, 871627041, 3136899816, 4278115101, 35355632943, 42359479638
OFFSET
1,3
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
A056372(n)-3*A056371(n)+3.
CROSSREFS
Cf. A056372.
Sequence in context: A298035 A178082 A056387 * A146712 A364051 A318549
KEYWORD
nonn
STATUS
approved