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Table of n, a(n) for n=0..20.
A. Karttunen, C-program for computing the initial terms of this sequence
Sequence in context: A137271 A131356 A191119 * A118670 A228958 A216669
Adjacent sequences: A089407 A089408 A089409 * A089411 A089412 A089413
Antti Karttunen, Nov 29 2003