1,1

The main entry for this relation is the bisection in A146968.

Table of n, a(n) for n=1..6.

71^2 = 7!+1, which introduces (71,7) into the sequence.

Sequence in context: A309545 A285105 A089520 * A051552 A165367 A166549

Adjacent sequences: A163521 A163522 A163523 * A163525 A163526 A163527

nonn,less

Vincenzo Librandi, Jul 30 2009

Reference to main sequence added by R. J. Mathar, Aug 02 2009

approved