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A061796 Number of distinct sums sigma(i) + sigma(j) for 1<=i<=j<=n, where sigma(k) = A000203(k). +0
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1, 3, 6, 9, 12, 17, 18, 23, 27, 30, 30, 39, 40, 45, 45, 51, 51, 60, 60, 66, 69, 72, 72, 81, 81, 81, 86, 92, 94, 103, 103, 112, 112, 114, 114, 131, 133, 133, 133, 141, 141, 151, 153, 155, 157, 157, 157, 175, 178, 185, 185, 193, 193, 202, 202, 202, 205, 205, 205 (list; graph; listen)
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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