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Spt function
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<p>The spt function (smallest parts function) is a function in <a href="/facts/Number_theory/zhoa7zrc">number theory</a> that counts the sum of the number of smallest parts in each <a href="/facts/Integer_partition/LtyXWqwH">integer partition</a> of a positive integer. It is related to the <a href="/facts/Partition_function_(number_theory)/mBUDy5vU">partition function</a>. </p><p>The first few values of spt(<i>n</i>) are: </p> 1, 3, 5, 10, 14, 26, 35, 57, 80, 119, 161, 238, 315, 440, 589 ... (sequence A092269 in the <a href="/facts/On-Line_Encyclopedia_of_Integer_Sequences/yow6cVsU">OEIS</a>)