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Table of n, a(n) for n=1..17.
J. A. Sellers, Infinitely Many Composite NSW Numbers: An Inductive Proof
J. A. Sellers and H. Williams, On the Infinitude of Composite NSW Numbers
a = 1; a = 7; a[n_] := a[n] = 6a[n - 1] - a[n - 2]; a /@ Select[ Range, !PrimeQ[ a[ # ]] &] (* Robert G. Wilson v, Jun 09 2004 *)
Cf. A002315, A088165.
Sequence in context: A202050 A236520 A235657 * A163043 A069366 A163054
Adjacent sequences: A094663 A094664 A094665 * A094667 A094668 A094669
Lekraj Beedassy, Jun 07 2004
More terms from Robert G. Wilson v, Jun 09 2004