1,1
Cf. A160120, A160121, A161326.
Sequence in context: A019638 A116535 A122001 this_sequence A151685 A019809 A021270
Adjacent sequences: A161324 A161325 A161326 this_sequence A161328 A161329 A161330
more,nonn
Omar E. Pol (info(AT)polprimos.com), Jun 18 2009
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