1,1
Cf. A004676, A075363, A007088.
Adjacent sequences: A090411 A090412 A090413 this_sequence A090415 A090416 A090417
Sequence in context: A105612 A141744 A089783 this_sequence A068227 A046824 A130156
nonn,tabl
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 30 2003
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