1,1

J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 455, pp 94, Ellipses, Paris 2008.

a(n)=A033992(10^n).

Cf. A033992.

Sequence in context: A165056 A165060 A165069 this_sequence A078420 A152826 A133767

Adjacent sequences: A143038 A143039 A143040 this_sequence A143042 A143043 A143044

more,nonn

Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 18 2008