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A103703
Add 4 to each of the preceding digits, beginning with 1.
7
1, 5, 9, 13, 5, 7, 9, 11, 13, 5, 5, 5, 7, 9, 9, 9, 11, 13, 13, 13, 5, 5, 5, 7, 5, 7, 5, 7, 9, 9, 9, 11, 9, 11, 9, 11, 13, 13, 13, 5, 5, 13, 5, 5, 13, 5, 5, 5, 7, 5, 7, 5, 7, 9, 9, 5, 7, 9, 9, 5, 7, 9, 9, 9, 11, 9, 11, 9, 11, 13, 13, 9, 11, 13, 13, 9, 11, 13, 13, 13, 5, 5, 13, 5, 5, 13, 5, 5, 5, 7
OFFSET
1,2
MATHEMATICA
Flatten[ NestList[ Function[x, Flatten[ IntegerDigits[x] + 4]], {1}, 22]]
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Feb 12 2005
STATUS
approved