A133069 Successive digits of twin primes A001097.

3, 5, 7, 1, 1, 1, 3, 1, 7, 1, 9, 2, 9, 3, 1, 4, 1, 4, 3, 5, 9, 6, 1, 7, 1, 7, 3, 1, 0, 1, 1, 0, 3, 1, 0, 7, 1, 0, 9, 1, 3, 7, 1, 3, 9, 1, 4, 9, 1, 5, 1, 1, 7, 9, 1, 8, 1, 1, 9, 1, 1, 9, 3, 1, 9, 7, 1, 9, 9, 2, 2, 7, 2, 2, 9, 2, 3, 9, 2, 4, 1, 2, 6, 9, 2, 7, 1, 2, 8, 1, 2, 8, 3, 3, 1, 1, 3, 1, 3

Offset

1,1

Comments

Also, with offset 0, decimal expansion of the constant by concatenate twin primes. Example: 0.35711131719293141435961... Hence, subsequence of A033308. - Omar E. Pol, Oct 21 2017

Links

G. C. Greubel, Table of n, a(n) for n = 1..5000

Omar E. Pol, Determinacion geometrica de los numeros primos y perfectos.

Mathematica

Flatten[IntegerDigits/@Union[Flatten[Select[Partition[Prime[ Range[ 100]], 2, 1], Last[#]- First[#] == 2&]]]] (* Harvey P. Dale, May 29 2014 *)

Crossrefs

Cf. A001097, A033308, A053067, A133013, A133014.

Sequence in context: A371144 A031100 A031057 * A192327 A266295 A172049

Adjacent sequences: A133066 A133067 A133068 * A133070 A133071 A133072

Keyword

easy,nonn,cons,base

Author

Omar E. Pol, Nov 10 2007

Status

approved