A006169 Number of factorization patterns of polynomials of degree n over F_4. (Formerly M2475)

1, 3, 5, 11, 16, 32, 47, 84, 124, 206, 299, 481, 687, 1058, 1506, 2255, 3163, 4638, 6444, 9258, 12757, 18021, 24604, 34307, 46445, 63926, 85948, 117021, 156156, 210617, 279202, 373252, 491801, 652264, 854343, 1125152, 1465587, 1917282, 2484733

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, A027377(d)>=n/d} 1. - Franklin T. Adams-Watters, Jun 19 2006

Crossrefs

Cf. A006167-A006171.

Cf. A027377.

Sequence in context: A219039 A074820 A327043 * A323582 A088328 A102643

Adjacent sequences: A006166 A006167 A006168 * A006170 A006171 A006172

Keyword

nonn

Author

N. J. A. Sloane

Extensions

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

Status

approved