A213454 a(n) = A001253(n)/2. (Formerly N2026)

0, 0, 0, 0, 1, 10, 99, 1024, 11234, 132269, 1670481, 22586759, 326104782, 5012334813, 81773199730, 1411970823695, 25734352973795, 493835621908325, 9954533195180673, 210325338388169070, 4648654469101584811, 107281499755284506084

Offset

1,6

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. A001253.

Sequence in context: A105694 A179557 A300000 * A000456 A138365 A190823

Adjacent sequences: A213451 A213452 A213453 * A213455 A213456 A213457

Keyword

nonn

Author

N. J. A. Sloane, Jun 12 2012

Status

approved