A303810 Mirror image of the triangle A026794.

1, 1, 1, 1, 0, 2, 1, 0, 1, 3, 1, 0, 0, 1, 5, 1, 0, 0, 1, 2, 7, 1, 0, 0, 0, 1, 2, 11, 1, 0, 0, 0, 1, 1, 4, 15, 1, 0, 0, 0, 0, 1, 2, 4, 22, 1, 0, 0, 0, 0, 1, 1, 2, 7, 30, 1, 0, 0, 0, 0, 0, 1, 1, 3, 8, 42, 1, 0, 0, 0, 0, 0, 1, 1, 2, 4, 12, 56, 1, 0, 0, 0, 0, 0, 0, 1, 1, 2, 5, 14, 77, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 3

Offset

1,6

Links

Table of n, a(n) for n=1..102.

Example

Triangle begins:
1;
1,  1;
1,  0,  2;
1,  0,  1,  3;
1,  0,  0,  1,  5;
1,  0,  0,  1,  2,  7;
1,  0,  0,  0,  1,  2, 11;
1,  0,  0,  0,  1,  1,  4, 15;
1,  0,  0,  0,  0,  1,  2,  4, 22;
1,  0,  0,  0,  0,  1,  1,  2,  7, 30;
1,  0,  0,  0,  0,  0,  1,  1,  3,  8, 42;
1,  0,  0,  0,  0,  0,  1,  1,  2,  4, 12, 56;
1,  0,  0,  0,  0,  0,  0,  1,  1,  2,  5, 14, 77;
1,  0,  0,  0,  0,  0,  0,  1,  1,  1,  3,  6, 21, 101;
1,  0,  0,  0,  0,  0,  0,  0,  1,  1,  2,  3,  9,  24, 135;
...

Crossrefs

Leading diagonal gives A000041.

Second diagonal gives A002865.

Row sums give A000041, n >= 1.

Columns 1-4: A000012, A000007, A033322, A278105.

Cf. A026794.

Sequence in context: A286354 A296067 A306713 * A052249 A030528 A077227

Adjacent sequences: A303807 A303808 A303809 * A303811 A303812 A303813

Keyword

nonn,tabl

Author

Omar E. Pol, May 05 2018

Status

approved