OFFSET
0,1
FORMULA
Index SOD's are computed in association with the primes in A117458
EXAMPLE
a(0) = 49 because 49 is the index of the prime 227. When the digits of each are summed, 49 = 4+9 = 13, the next prime after 11 -- formed by summing 2+2+7 = 11 in 227. Since 11 is the prime preceding 13, 49 belongs in the sequence.
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Enoch Haga, Mar 18 2006
STATUS
approved