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A167413 Irregular array with the first differences of row A167384(n,.) in row n. 1
2, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The left column has 2 two's, 4 three's, 6 four's,... ,2*k-2 k's.

Entries in the remaining columns are all 1.

If one looks at the flattened sequence (2), (2), (1,3), (1,3), (1,3),.. in blocks of 1, 1, 2, 2, 2,.. , A000194(k) terms, the sum of entries in the subsequence in block number k is A001670(k).

LINKS

Table of n, a(n) for n=0..104.

EXAMPLE

2;

2, 1;

3, 1;

3, 1;

3, 1;

3, 1, 1;

4, 1, 1;

4, 1, 1;

4, 1, 1;

4, 1, 1;

4, 1, 1;

4, 1, 1, 1;

5, 1, 1, 1;

5, 1, 1, 1;

5, 1, 1, 1;

5, 1, 1, 1;

5,...

CROSSREFS

Cf. A167381.

Sequence in context: A297626 A206441 A175245 * A340985 A259176 A237591

Adjacent sequences: A167410 A167411 A167412 * A167414 A167415 A167416

KEYWORD

nonn,tabf

AUTHOR

Paul Curtz, Nov 03 2009

STATUS

approved

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Last modified December 6 12:11 EST 2022. Contains 358634 sequences. (Running on oeis4.)