A006168 Number of factorization patterns of polynomials of degree n over F_3. (Formerly M2461)

1, 3, 5, 10, 15, 29, 42, 72, 107, 170, 246, 383, 542, 810, 1145, 1662, 2311, 3305, 4537, 6363, 8677, 11974, 16159, 22068, 29504, 39811, 52887, 70632, 93102, 123362, 161473, 212198, 276185, 360270, 466090, 604267, 777399, 1001656, 1282456

Offset

1,2

References

R. A. Hultquist, G. L. Mullen and H. Niederreiter, Association schemes and derived PBIB designs of prime power order, Ars. Combin., 25 (1988), 65-82.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

T. D. Noe, Table of n, a(n) for n=1..1000

R. A. Hultquist, G. L. Mullen and H. Niederreiter, Association schemes and derived PBIB designs of prime power order, Ars. Combin., 25 (1988), 65-82. (Annotated scanned copy)

Formula

Euler transform of sequence b(n) = sum_{d|n, A027376(d)>=n/d} 1. - Franklin T. Adams-Watters, Jun 19 2006

Crossrefs

Cf. A006167-A006171.

Cf. A027376.

Sequence in context: A054473 A265508 A327042 * A250115 A358406 A287563

Adjacent sequences: A006165 A006166 A006167 * A006169 A006170 A006171

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Franklin T. Adams-Watters, Jun 19 2006

Status

approved