sequential numbers(The unique naming can easily be extended to temporary objects created while a process is running by assigning them sequential numbers within the process's ... Alexander Demidov)
numerical sequence(A numerical sequence is a set of ordered values of a function, whose domain consists of the set of all natural numbers in ascending order of the numbers. The elements of a sequence are called the terms. portal.tpu.ru:7777/SHARED/k/KONVAL/Sites/English_sites/calculus/1_Basic_f.htm Alexander Demidov)