A056379 - OEIS

A056379

Number of step shifted (decimated) sequences using exactly five different symbols.

0, 0, 0, 0, 30, 900, 2800, 32010, 139080, 1276200, 2960940, 41626230, 75086430, 801522300, 3162262170, 16463793480, 42395689530, 579164463000, 983928850100, 11241277288950, 37913042835300

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,5

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]

LINKS

Table of n, a(n) for n=1..21.

FORMULA

A056374(n)-5*A056373(n)+10*A056372(n)-10*A056371(n)+5.

CROSSREFS

Cf. A056374.

Sequence in context: A171335 A097313 A056389 * A320670 A171304 A009974

Adjacent sequences: A056376 A056377 A056378 * A056380 A056381 A056382

KEYWORD

nonn

AUTHOR

Marks R. Nester

STATUS

approved