login
A056380
Number of step shifted (decimated) sequences using exactly six different symbols.
2
0, 0, 0, 0, 0, 360, 2520, 48060, 317520, 4109040, 12923136, 238785300, 559279980, 7612396920, 37864711260, 246263046840, 787758864480, 13282478342640, 27723264985920, 387585098313300, 1595144664456720
OFFSET
1,6
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
A056375(n)-6*A056374(n)+15*A056373(n)-20*A056372(n)+15*A056371(n)-6.
CROSSREFS
Cf. A056375.
Sequence in context: A236991 A205514 A056390 * A234555 A234550 A024185
KEYWORD
nonn
STATUS
approved