1,2

Left column = A073757: (1, 2, 3, 4, 5, 5, 7, 8, 8, 7,...). Row sums = A134675: (1, 4, 9, 15, 25, 30, 49, 55, 80,...). n-th row (n>1) has n terms of "n", iff n is prime.

A134673 * A000012 as infinite lower triangular matrices. Triangle, partial sums of A134673 starting from the right of each row.

First few rows of the triangle are:

1;

2, 2;

3, 3, 3;

4, 3, 4, 4;

5, 5, 5, 5, 5;

5, 3, 4, 6, 6, 6;

7, 7, 7, 7, 7, 7, 7;

7, 6, 5, 5, 8, 8, 8, 8;

8, 7, 7, 9, 9, 9, 9, 9, 9;

7, 5, 6, 6, 6, 10, 10, 10, 10, 10;

...

Cf. A134673, A134675, A073757.

Sequence in context: A062558 A072789 A126302 this_sequence A000121 A049846 A086712

Adjacent sequences: A134671 A134672 A134673 this_sequence A134675 A134676 A134677

nonn,tabl

Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 05 2007