1,2

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

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

Cf. A000252, A069177.

Sequence in context: A321308 A109210 A056707 * A279034 A120069 A018975

Adjacent sequences: A069253 A069254 A069255 * A069257 A069258 A069259

nonn,mult

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

More terms from Vladeta Jovovic, Apr 17 2002

approved