OFFSET
1,1
EXAMPLE
0123456789101112131415161718192021...
--|.................. sum 0+1+2 = prime 3
------------|........ sum 0+1+2+3+4+5+6+7+8+9+1+0+1 = prime 47
--------------------| sum 0+1+2+3+4+5+6+7+8+9+1+0+1+1+1+2+1+3+1+4+1 = prime 61
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Apr 15 2000
EXTENSIONS
Offset changed by Georg Fischer, Sep 02 2022
STATUS
approved