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A069256 Size of the Sylow 2-subgroup of the group GL_2(Z_n): maximal power of 2 that divides A000252(n). 0
1, 2, 16, 32, 32, 32, 32, 512, 16, 64, 16, 512, 32, 64, 512, 8192, 512, 32, 16, 1024, 512, 32, 32, 8192, 32, 64, 16, 1024, 32, 1024, 128, 131072, 256, 1024, 1024, 512, 32, 32, 512, 16384, 128, 1024, 16, 512, 512, 64, 64, 131072, 32, 64, 8192, 1024, 32, 32, 512 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..55.

FORMULA

Multiplicative with a(2^e) = 2^(4*e-3) and a(p^e) = power of 2 in prime factorization of (p - 1)*(p^2-1) for an odd prime p. - Vladeta Jovovic, Apr 17 2002

CROSSREFS

Cf. A000252, A069177.

Sequence in context: A321308 A109210 A056707 * A279034 A120069 A018975

Adjacent sequences:  A069253 A069254 A069255 * A069257 A069258 A069259

KEYWORD

nonn,mult

AUTHOR

Sharon Sela (sharonsela(AT)hotmail.com), Apr 14 2002

EXTENSIONS

More terms from Vladeta Jovovic, Apr 17 2002

STATUS

approved

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Last modified May 7 19:23 EDT 2021. Contains 343652 sequences. (Running on oeis4.)