A054541 - OEIS

A054541

Sum of first n terms equals n-th prime.

2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 4, 2, 4, 6, 6, 2, 6, 4, 2, 6, 4, 6, 8, 4, 2, 4, 2, 4, 14, 4, 6, 2, 10, 2, 6, 6, 4, 6, 6, 2, 10, 2, 4, 2, 12, 12, 4, 2, 4, 6, 2, 10, 6, 6, 6, 2, 6, 4, 2, 10, 14, 4, 2, 4, 14, 6, 10, 2, 4, 6, 8, 6, 6, 4, 6, 8, 4, 8, 10, 2, 10, 2, 6, 4, 6, 8, 4, 2, 4, 12, 8, 4, 8, 4, 6

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OFFSET

1,1

COMMENTS

Except for first term, same as A001223.

First differences of A182986. - Omar E. Pol, Oct 31 2013

A075526 is 1 together with A001223. This is 2 together with A001223. A125266 is 3 together with A001223. - Omar E. Pol, Nov 01 2013

Convolved with A024916 gives A086718. - Omar E. Pol, Dec 23 2021

LINKS

Table of n, a(n) for n=1..97.

MATHEMATICA

Join[{2}, Differences[Prime[Range[100]]]] (* Paolo Xausa, Oct 25 2023 *)