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A213452 A001251(n)/2.
(Formerly N1761)
0
0, 0, 1, 6, 35, 221, 1554, 12108, 104293, 986452, 10186669, 114173261, 1381606490, 17963133122, 249838334627, 3702507093782, 58255992451047, 970036965428901, 17043762930794782, 315148172259643152, 6117607922562556061, 124394868793682972996 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

F. N. David, M. G. Kendall and D. E. Barton, Symmetric Function and Allied Tables, Cambridge, 1966, p. 262. (Terms for n>=13 are incorrect).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Cf. A001251.

Sequence in context: A291246 A117671 A317409 * A000399 A081051 A145145

Adjacent sequences:  A213449 A213450 A213451 * A213453 A213454 A213455

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 12 2012

STATUS

approved

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Last modified September 18 01:39 EDT 2021. Contains 347504 sequences. (Running on oeis4.)