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A133380 A055450 + A030111 - A000012 as infinite lower triangular matrices. 0
1, 1, 1, 3, 1, 1, 4, 5, 1, 1, 7, 6, 7, 1, 1, 10, 13, 8, 9, 1, 1, 16, 17, 21, 10, 11, 1, 24, 30, 26, 31, 12, 13, 1, 1, 38, 42, 52, 37, 43, 14, 15, 1, 1, 59, 69, 69, 84, 50, 57, 16, 17, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row sums = A134508

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

3, 1, 1;

4, 5, 1, 1;

7, 6, 7, 1, 1;

10, 13, 8, 9, 1, 1;

16, 17, 21, 10, 11, 1, 1;

24, 30, 26, 31, 12, 13, 1, 1;

38, 42, 52, 37, 43, 14, 15, 1, 1;

...

CROSSREFS

Cf. A055450, A030111, A134508.

Sequence in context: A275204 A321876 A131238 * A343168 A105687 A209415

Adjacent sequences:  A133377 A133378 A133379 * A133381 A133382 A133383

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Oct 28 2007

STATUS

approved

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Last modified July 31 03:28 EDT 2021. Contains 346367 sequences. (Running on oeis4.)