A136248 Triangle H4 read by rows: see link for definition.

1, 1, 1, 1, 1, 1, 3, 4, 6, 4, 3, 1, 1, 7, 13, 26, 31, 31, 25, 13, 6, 1, 1, 15, 40, 100, 171, 220, 255, 215, 156, 85, 35, 10, 1

Offset

1,7

Comments

Row n has 3n+1 terms.

Links

Table of n, a(n) for n=1..35.

Gottfried Helms, Comments on A136206 and A136248

Example

Triangle begins:
1
1 1 1 1
1 3 4 6 4 3 1
1 7 13 26 31 31 25 13 6 1
1 15 40 100 171 220 255 215 156 85 35 10 1

Crossrefs

Sequence in context: A263354 A212482 A010469 * A175653 A101432 A238502

Adjacent sequences: A136245 A136246 A136247 * A136249 A136250 A136251

Keyword

nonn,tabf

Author

Gottfried Helms, Apr 16 2008

Status

approved