A Sequitur Poem consists of two lines containing an equal number of syllables in each line, thus sequitur. One follows the other. It does not matter how many syllables are in the lines, only that they have an equal number in each. The Sequitur Poem usually contains a punch, often the result of an unexpected association between the first and second lines. One can use meter or rhyme scheme, or both, in a Sequitur Poem. It is just not a requirement of the form.
A Resequitur Poem consists of two or more Sequitur Poems formed into a single poem. Every two lines may contain a complete Sequitur Poem, having an equal number of syllables in each. Alternately, the lines of the Sequitur Poems may be split to create a more complex poetic form. For instance, you can form an ABAB structure for the number of syllables in the lines (rather than the rhyme scheme). What is important is that the Resequitur Poem contain an even number of lines and that there are two lines each (or 4, or 6, etc.) that contain an equal number of syllables.
The great thing about a Sequitur Poem is that, because it can be a building block for a Resequitur poem, you can hold on to it. Years later you may find that it fits perfectly, either as is or with a little tweaking, into a Resequiter poem that you are working on.