1,2
A024431(A115406(n)) - A024431(a(n)) = n.
Cf. A115408.
Sequence in context: A012710 A009512 A055599 this_sequence A010586 A070678 A124091
Adjacent sequences: A115404 A115405 A115406 this_sequence A115408 A115409 A115410
nonn
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 22 2006
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