A082925 Partial sums of A082924.

3, 6, 10, 12, 18, 21, 29, 33, 60, 65, 77, 83, 97, 104, 149, 157, 175, 184, 204, 214, 277, 288, 312, 324, 399, 412, 493, 507, 537, 552, 584, 600, 699, 716, 821, 839, 877, 896, 1013, 1033, 1075, 1096, 1140, 1162, 1297, 1320, 1368, 1392, 1539, 1564, 1717, 1743

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Formula

a(n) = sum_{j=1..n} A082924(j).

Example

For n = 5, sum(3+3+4+2+6) = 18 is the 5th entry of the sequence.

Prog

(PARI) crazy1(n) = { s=0; tmp; for(x=1, n, if(x%2==0, y=x/2, y=x*3); if(isprime(x), y=x+1); s=s+y; \ print1(y" ") print1(s" "); tmp=s1; s1=s2; s2=tmp; ); print(); print(s1/s2"="s1/s2+0.0) } /* note that s1 and s2 do not have any meaning in that context .. R. J. Mathar, Oct 07 2011 */

Crossrefs

Sequence in context: A310045 A310046 A196524 * A131696 A164114 A167219

Adjacent sequences: A082922 A082923 A082924 * A082926 A082927 A082928

Keyword

easy,nonn

Author

Cino Hilliard, May 26 2003

Status

approved