A079551 -id:A079551 - cp's OEIS frontend

A079552 Record values in A079551.

0, 1, 3, 6, 10, 14, 20, 25, 31, 35, 41, 49, 58, 66, 74, 78, 84, 88, 100, 108, 116, 128, 136, 140, 148, 160, 169, 177, 181, 193, 203, 215, 223, 231, 239, 245, 257, 269, 279, 283, 289, 293, 311, 319, 333, 342, 354, 370, 378, 382, 394, 402, 410, 430, 438, 447, 451, 457, 473

Offset: 0

N. J. A. Sloane, Jan 24 2003

nonn

Amiram Eldar, Table of n, a(n) for n = 0..10000

Cf. A000005, A006093, A079551.

Partial sums of A008328.

RecurrenceTable[{a[0]==0, a[n]==DivisorSigma[0,Prime[n]-1]+a[n-1]}, a, {n, 100}] (* Jon Maiga, Jan 02 2019 *)

a(n) = A000005(A006093(n)) + a(n-1). - Jon Maiga, Jan 02 2019

A143540 Triangle read by rows, (A143538)^2; 1<=k<=n.

Original entry on oeis.org

0, 0, 1, 0, 2, 1, 0, 2, 1, 0, 0, 3, 2, 0, 1, 0, 3, 2, 0, 1, 0, 0, 4, 3, 0, 2, 0, 1, 0, 4, 3, 0, 2, 0, 1, 0, 0, 4, 3, 0, 2, 0, 1, 0, 0, 0, 4, 3, 0, 2, 0, 1, 0, 0, 0, 0, 5, 4, 0, 3, 0, 2, 0, 0, 0, 1

Offset: 1

Gary W. Adamson, Aug 23 2008

Row sums = A079551: (0, 1, 3, 3, 6, 6, 10,...).

			First few rows of the triangle =
0;
0, 1;
0, 2, 1;
0, 2, 1, 0;
0, 3, 2, 0, 1;
0, 3, 2, 0, 1, 0
0, 4, 3, 0, 2, 0, 1;
...

Cf. A143538, A079551.

Square of triangle A143538.

cp's OEIS Frontend

A079552 Record values in A079551.

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