One of the most frequently-occurring uses for a mnemonic is to remember a sequence of integers. As always, the question is one of efficiency versus memorability: how much must the original integer sequence be expanded? The obvious solution to the problem, that of letting the number of letters in a word stand for the integer (with ten letters for the digit zero) is extremely inefficient, representing a five-fold inflation.
Eckler, A. Ross
"Mnemonics for Number Sequences,"
Word Ways: Vol. 41
, Article 16.
Available at: http://digitalcommons.butler.edu/wordways/vol41/iss4/16