1,1
Cf. A139250, A139251, A139252, A139253, A139254.
Adjacent sequences: A139556 A139557 A139558 this_sequence A139560 A139561 A139562
Sequence in context: A091305 A085498 A128926 this_sequence A048184 A045396 A094342
more,nonn
Omar E. Pol (info(AT)polprimos.com), May 17 2008
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