OFFSET
1,1
LINKS
Patrick De Geest, World!Of Numbers
FORMULA
Primes of either of two forms: 4*(a+1)*10^(2*k) + 3*10^k + 4*a - 7 or 4*(a+1)*10^(2*k) - 3*10^k + 4*a - 29, where 1 <= a <= 8 and k is positive integer. - Max Alekseyev, Apr 12 2009
EXAMPLE
319699 = 79797 + 79897 + 79997 + 80008.
MATHEMATICA
Select[Total/@Partition[Select[Range[10^6], PalindromeQ], 4, 1], PrimeQ] (* The program generates the first 9 terms of the sequence. *) (* Harvey P. Dale, Nov 24 2022 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Sep 15 1998
EXTENSIONS
Extended by Max Alekseyev, Apr 12 2009
STATUS
approved