1,1
Cf. A000040, A033844, A018249, A051440, A051439.
Sequence in context: A063106 A096295 A074494 this_sequence A148401 A148402 A148403
Adjacent sequences: A051435 A051436 A051437 this_sequence A051439 A051440 A051441
nonn
N. J. A. Sloane (njas(AT)research.att.com).
More terms from Michael Lugo (mlugo(AT)thelabelguy.com), Dec 22 1999
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