A137585 Triangle read by rows: A054525 * A026794.

1, 0, 1, 1, 0, 1, 2, 0, 0, 1, 4, 1, 0, 0, 1, 5, 1, 0, 0, 0, 1, 10, 2, 1, 0, 0, 0, 1, 12, 3, 1, 0, 0, 0, 0, 1, 20, 4, 1, 1, 0, 0, 0, 0, 1, 25, 5, 2, 1, 0, 0, 0, 0, 0, 1, 41, 8, 3, 1, 1, 0, 0, 0, 0, 0, 1, 47, 10, 3, 1, 1, 0, 0, 0, 0, 0, 0, 1, 76, 14, 5, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1

Offset

1,7

Comments

Row sums = A000837 starting (1, 1, 2, 3, 6, 7, 14, 17, ...).

Links

Table of n, a(n) for n=1..91.

Formula

Mobius transform of A026794, the partition triangle.

Example

First few rows of the triangle:
   1;
   0, 1;
   1, 0, 1;
   2, 0, 0, 1;
   4, 1, 0, 0, 1;
   5, 1, 0, 0, 0, 1;
  10, 2, 1, 0, 0, 0, 1;
  12, 3, 1, 0, 0, 0, 0, 1;
  ...

Crossrefs

Cf. A054525, A026794, A000837.

Sequence in context: A355916 A309023 A353429 * A301344 A301579 A072458

Adjacent sequences: A137582 A137583 A137584 * A137586 A137587 A137588

Keyword

nonn,tabl

Author

Gary W. Adamson, Jan 27 2008

Status

approved