OFFSET
1,1
COMMENTS
Complete list of 20 prime numbers also of the form n^2+n+41 for n=20 to 39
EXAMPLE
21*21+20=461
22*22+19=503
23*23+18=547
MATHEMATICA
#[[1]]^2+#[[2]]&/@Thread[{Range[21, 40], Range[20, 1, -1]}] (* Harvey P. Dale, Jan 01 2018 *)
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
Pierre CAMI, Jun 12 2005
STATUS
approved