A255307 - OEIS

A255307

Concatenation of the first n entries of the difference sequence of prime numbers (see A001223).

1, 12, 122, 1224, 12242, 122424, 1224242, 12242424, 122424246, 1224242462, 12242424626, 122424246264, 1224242462642, 12242424626424, 122424246264246, 1224242462642466, 12242424626424662, 122424246264246626, 1224242462642466264, 12242424626424662642, 122424246264246626426

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OFFSET

1,2

COMMENTS

The digits in A001223, the sequence of differences between consecutive primes, are concatenated to form this sequence.

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

a(3) = 122, because the first three entries of A001223 are 1, 2, 2.

MATHEMATICA

f[n_] := FromDigits@ Differences@ Prime@ Range[n + 1]; Array[f, 21] (* Robert G. Wilson v, Mar 31 2015 *)

PROG