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1,4
Table of n, a(n) for n=1..59.
a(n) = sum_{i=1..n} A139789(i). [From R. J. Mathar, Nov 03 2008]
Cf. A139789.
Sequence in context: A145801 A033291 A105434 * A061536 A095114 A062048
Adjacent sequences: A145193 A145194 A145195 * A145197 A145198 A145199
nonn
Giovanni Teofilatto, Oct 04 2008
More terms from R. J. Mathar, Nov 03 2008
approved