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A249413
Primes in the hexanacci numbers sequence A000383.
12
11, 41, 72426721, 143664401, 565262081, 4160105226881, 253399862985121, 997027328131841, 212479323351825962211841, 188939838859312612896128881921, 22828424707602602744356458636161, 661045104283639247572028952777478721
OFFSET
1,1
COMMENTS
a(13) is too large to display here. It has 62 digits and is the 210th term in A000383.
MATHEMATICA
a={1, 1, 1, 1, 1, 1}; For[n=6, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], Print[sum]]; a=RotateLeft[a]; a[[5]]=sum]
KEYWORD
nonn
AUTHOR
Robert Price, Dec 03 2014
STATUS
approved