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A026283
a(n) = sum of the numbers between the two n's in A026280.
0
9, 13, 18, 24, 39, 57, 78, 102, 117, 146, 164, 198, 219, 258, 282, 326, 373, 402, 454, 509, 543, 603, 666, 705, 773, 844, 888, 964, 1011, 1092, 1176, 1228, 1317, 1372, 1466, 1563, 1623, 1725, 1788, 1895, 2005, 2073, 2188, 2259
OFFSET
1,1
CROSSREFS
Sequence in context: A295113 A263941 A090415 * A307287 A373781 A373914
KEYWORD
nonn
STATUS
approved