A109400 -id:A109400 - cp's OEIS frontend

A109402 Partial sums of A109400.

1, 3, 4, 6, 8, 11, 12, 14, 17, 19, 22, 27, 28, 30, 33, 37, 39, 42, 47, 54, 55, 57, 60, 64, 69, 71, 74, 79, 86, 97, 98, 100, 103, 107, 112, 118, 120, 123, 128, 135, 146, 159, 160, 162, 165, 169, 174, 180, 187, 189, 192, 197, 204, 215, 228, 245, 246

Offset: 1

Reinhard Zumkeller, Jun 27 2005

nonn

a(n) = Sum(A109400(m): 1<=m<=n).

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Cf. A007504, A014370.

Accumulate[With[{prs=Prime[Range[20]]},Flatten[Table[{Range[n],Take[prs,n]},{n,10}]]]] (* Harvey P. Dale, May 25 2025 *)

A109401 Number of primes in the first n terms of A109400.

Original entry on oeis.org

0, 1, 1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 9, 10, 11, 11, 12, 13, 14, 15, 15, 16, 17, 17, 18, 19, 20, 21, 22, 23, 23, 24, 25, 25, 26, 26, 27, 28, 29, 30, 31, 32, 32, 33, 34, 34, 35, 35, 36, 37, 38, 39, 40, 41, 42, 43, 43, 44, 45, 45, 46, 46, 47, 47, 48, 49, 50, 51

Offset: 1

Reinhard Zumkeller, Jun 27 2005

nonn

a(n) = Sum(A010051(A109400(m)): 1<=m<=n).

Cf. A000720.

cp's OEIS Frontend

A109402 Partial sums of A109400.

Views

Author

Keywords

Comments

Links

Crossrefs

Programs