sequence (n.) Look up sequence at Dictionary.com
late 14c., "hymn sung after the Hallelujah and before the Gospel," from Old French sequence "answering verses" (13c.), from Medieval Latin sequentia "a following, a succession," from Latin sequentem (nominative sequens), present participle of sequi "to follow" (see sequel). In Church use, a partial loan-translation of Greek akolouthia, from akolouthos "following." General sense of "succession," also "a sequence at cards," appeared 1570s.
sequence (v.) Look up sequence at Dictionary.com
"arrange in a sequence," 1954, from sequence (n.). Related: Sequenced; sequencing.