1,2

John Riordan: Introduction to combinatorics New York, unabridged republication of the edition published by John Wiley & Sons, New York, 1958, ISBN 0-486-42536-3.

Percy A. MacMahon: Combinatorial Analysis, Volumes I, II bound in one volume, Chelsea Publishing Company, New York, 1960, Reprint of the two volumes published 1915, 1916 by Cambridge University Press, Library of Congress Catalog Card No. 59-10267.

Thomas Wieder, Home Page.

Thomas Wieder, (Old) Home Page.

Cf. A000079, A000670.

Sequence in context: A109793 A112242 A035341 this_sequence A049035 A047897 A121144

Adjacent sequences: A137380 A137381 A137382 this_sequence A137384 A137385 A137386

nonn

Thomas Wieder (thomas.wieder(AT)t-online.de), Apr 09 2008