A076275 Numbers of the form (4^{mr}-1)/(4^r-1) for positive integers m, r.

1, 5, 17, 21, 65, 85, 257, 273, 341, 1025, 1365, 4097, 4161, 4369, 5461, 16385, 21845, 65537, 65793, 69905, 87381, 262145, 266305, 349525, 1048577, 1049601, 1118481, 1398101, 4194305, 5592405, 16777217, 16781313, 16843009, 17043521, 17895697, 22369621

Offset

1,2

Links

Table of n, a(n) for n=1..36.

T. Chinburg and M. Henriksen, Sums of k-th powers in the ring of polynomials with integer coefficients, Acta Arithmetica, 29 (1976), 227-250.

Crossrefs

Cf. A064896 (k=2), A076270 (k=3), A076284 (k=5), A076285 (k=6), A076286 (k=7), A076287 (k=8), A076288 (k=9), A076289 (k=10).

Sequence in context: A032376 A145818 A029986 * A316307 A317262 A031270

Adjacent sequences: A076272 A076273 A076274 * A076276 A076277 A076278

Keyword

nonn

Author

N. J. A. Sloane, Nov 06 2002

Status

approved