OFFSET
1,2
COMMENTS
Multiplicative analog of A060403.
EXAMPLE
a(1) = 1.
a(2) = 1 * A060403(1) = 1 * LettersIn("one") = 1*3 = 3.
a(3) = 3 * A060403(2) = 3 * LettersIn("three") = 3*5 = 15.
a(4) = 15 * A060403(3) = 15 * LettersIn("fifteen") = 15*7 = 105.
a(10) = 74 * A060403(a(9)) = 74 * LettersIn("three billion six hundred seventysix million four hundred eleven thousand two hundred") = 1364160 * 55 * 49 * 74 = 272054 28800 = 2^7 * 3 * 5^2 * 7^4 * 11 * 29 * 37.
CROSSREFS
KEYWORD
easy,nonn,word,dumb,less
AUTHOR
Jonathan Vos Post, May 12 2007, May 22 2007
STATUS
approved