OFFSET
1,1
EXAMPLE
The third term is obtained by concatenating the previous two terms 2 and 3 to get 23.
MATHEMATICA
nxt[{a_, b_}]:={b, FromDigits[Join[IntegerDigits[a], IntegerDigits[b]]]}; NestList[nxt, {2, 3}, 10][[All, 1]] (* Harvey P. Dale, Jul 23 2018 *)
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Parthasarathy Nambi, Apr 21 2005
EXTENSIONS
More terms from Harvey P. Dale, Jul 23 2018
STATUS
approved