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A034584 Radon-Hurwitz numbers: log_2 of dimension of an irreducible R-module for Clifford algebra Cl_n. 2
0, 1, 2, 2, 3, 3, 3, 3, 4, 5, 6, 6, 7, 7, 7, 7, 8, 9, 10, 10, 11, 11, 11, 11, 12, 13, 14, 14, 15, 15, 15, 15, 16, 17, 18, 18, 19, 19, 19, 19, 20, 21, 22, 22, 23, 23, 23, 23, 24, 25, 26, 26, 27, 27, 27, 27, 28, 29, 30, 30, 31, 31, 31, 31 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

H. Blaine Lawson, Jr. and M.-L. Michelsohn, Spin Geometry, Princeton, p. 33.

Pertti Lounesto, Clifford Algebras and Spinors, Cambridge, 1997, p. 226.

LINKS

Table of n, a(n) for n=0..63.

FORMULA

a(n+8) = a(n) + 4, n >= 0, a(0) = 0, a(1) = 1, a(2)= a(3) = 2, a(4) = a(5) = a(6) = a(7) =3.

G.f.: x*(1+ x + x^3 + x^7)/((1 - x)*(1 - x^8)). - Wolfdieter Lang, Oct 03 2014

PROG

(PARI) concat(0, Vec(x*(1+ x + x^3 + x^7)/((1 - x)*(1 - x^8)) + O(x^80))) \\ Michel Marcus, Oct 03 2014

CROSSREFS

Cf. A003484, A034583-A034586.

Sequence in context: A071860 A004788 A284523 * A035430 A167227 A048280

Adjacent sequences:  A034581 A034582 A034583 * A034585 A034586 A034587

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 9 05:07 EDT 2020. Contains 336319 sequences. (Running on oeis4.)