login
A226041
Primes generated by concatenation of three consecutive numbers divided by three.
0
41, 263, 50539, 64007, 151549, 191953, 205421, 232357, 252559, 266027, 272761, 306431, 326633, 35035369, 39039373, 52386053, 62396063, 70404071, 77077411, 82416083, 96430097, 103103437, 106440107, 110444111
OFFSET
1,1
EXAMPLE
41 is in the list since concatenation of 1, 2 and 3 gives 123/3 = 41. Similarly concatenation of 15, 16 and 17 gives 151617 and 151617/3 = 50539, a prime.
MATHEMATICA
Select[Table[FromDigits[Flatten[IntegerDigits[n + Range[-1, 1]]]]/3, {n, 350}], PrimeQ]
CROSSREFS
Cf. A001703.
Sequence in context: A275180 A275128 A142113 * A233406 A020866 A142690
KEYWORD
nonn,base
AUTHOR
Jayanta Basu, May 24 2013
STATUS
approved