1,1
Wikipedia, More Information (in German)
Sequence in context: A060565 A133254 A080725 * A024914 A189636 A117741
Adjacent sequences: A139280 A139281 A139282 * A139284 A139285 A139286
fini,nonn
Herbert Kociemba (kociemba(AT)t-online.de), Jun 06 2008