A076272 Largest prime factor of A076271(n): A006530(A076271(n)).

1, 2, 2, 3, 3, 3, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 11, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 29, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 37, 37, 37, 37

Offset

1,2

Links

T. D. Noe, Table of n, a(n) for n = 1..10000

Formula

a(n) = A076271(n+1) - A076271(n) for all n;

a(A076273(k)+j) = A008578(k) for k>0 and 0 <= j < A075527(k-1).

Mathematica

Differences[NestList[#+FactorInteger[#][[-1, 1]]&, 1, 100]] (* Paolo Xausa, Dec 09 2023 *)

Crossrefs

See A180101 for a variant.

Sequence in context: A063905 A130312 A295629 * A180101 A108035 A202503

Adjacent sequences: A076269 A076270 A076271 * A076273 A076274 A076275

Keyword

nonn

Author

Reinhard Zumkeller, Oct 04 2002

Status

approved