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Y. Sano, The principal numbers of K. Saito for the types A_l, D_l and E_l, Discr. Math., 307 (2007), 2636-2642.
Table of n, a(n) for n=0..24.
Sequence in context: A196187 A004480 A051998 * A166209 A040215 A147422
Adjacent sequences: A131608 A131609 A131610 * A131612 A131613 A131614
N. J. A. Sloane, Oct 30 2007