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A122172 Triangle read by rows relating A074139, A074141, A078436 and A079025. 4
1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 2, 3, 2, 1, 1, 3, 4, 3, 1, 1, 4, 6, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

COMMENTS

A proper definition is needed for this sequence.

Are the row sums A074139(n) and the row lengths A000041(n)? - R. J. Mathar, May 08 2019

LINKS

Table of n, a(n) for n=0..45.

EXAMPLE

The triangle begins

1

1 1

1 1 1

1 2 1

1 1 1 1

1 2 2 1

1 3 3 1

1 1 1 1 1

1 2 2 2 1

1 2 3 2 1

1 3 4 3 1

1 4 6 4 1

1 1 1 1 1 1

1 2 2 2 2 1

1 2 3 3 2 1

1 3 4 4 3 1

1 3 5 5 3 1

1 4 7 7 4 1

1 5 10 10 5 1

CROSSREFS

Sequence in context: A139039 A279061 A206491 * A030613 A025910 A002637

Adjacent sequences:  A122169 A122170 A122171 * A122173 A122174 A122175

KEYWORD

obsc,nonn,tabf,more

AUTHOR

Alford Arnold, Aug 23 2006

STATUS

approved

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Last modified January 26 22:21 EST 2021. Contains 340443 sequences. (Running on oeis4.)