0,2
S. R. Finch, Mathematical Constants, Cambridge, 2003, Section 1.6.3.
Vincenzo Librandi, Table of n, a(n) for n = 0..2000
Sum_{n>=0} 1/a(n) = pi^3/(36 sqrt(3)) + 91 zeta(3)/216.
(MAGMA) [(6*n+1)^3: n in [0..60]]; /7 Vincenzo Librandi, May 04 2011
Sequence in context: A075546 A167733 A167730 * A016983 A134738 A017151
Adjacent sequences: A016920 A016921 A016922 * A016924 A016925 A016926
nonn,easy
N. J. A. Sloane (njas(AT)research.att.com).