OFFSET
1,1
REFERENCES
K. Russell and P. Carter, Number Puzzles, W. Foulsham and Co. Ltd. (1993).
EXAMPLE
2736 + 6372 = 9108
9108 + 8019 = 17127
17127 + 72171 = 89298
89298 + 89298 = 178596
CROSSREFS
KEYWORD
nonn
AUTHOR
Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006
STATUS
approved