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URL: https://oeis.org/A142716

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A142716

First differences of A140495.

0

1, 1, 1, 3, 3, 3, 3, 6, 6, 9, 9, 18, 18, 18, 45, 36, 45, 99, 81, 108, 216, 189, 243, 486, 432, 540, 1107, 972, 1215, 2511, 2187, 2754, 5670, 4941, 6237, 12798, 11178, 14094, 28917, 25272, 31833, 65367, 57105, 71928, 147744, 129033, 162567

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..47.

FORMULA

3 | a(n), n>3.

CROSSREFS

Sequence in context: A339718 A349926 A268443 * A211515 A260740 A255131

Adjacent sequences: A142713 A142714 A142715 * A142717 A142718 A142719

KEYWORD

nonn

AUTHOR

Paul Curtz, Sep 26 2008

STATUS

approved