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A338780 a(n) is the square root of Sum_{k = 1..A338774(n)} A338774(n - k). 2
0, 0, 1, 0, 0, 2, 3, 0, 0, 4, 5, 0, 0, 6, 7, 0, 0, 8, 9, 8, 0, 0, 3, 2, 0, 0, 10, 0, 0, 10, 12, 0, 0, 13, 14, 13, 12, 4, 13, 6, 17, 18, 19, 20, 0, 0, 21, 22, 0, 0, 23, 24, 0, 0, 25, 26, 21, 4, 13, 0, 0, 15, 21, 26, 26, 27, 30, 31, 32, 33, 32, 32, 35, 26, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
COMMENTS
Runs of consecutive zeros have always length 2.
LINKS
EXAMPLE
For n = 3:
- A338774(3) = 2,
- so a(3)^2 = A338774(3-1) + A338774(3-2) = 1 + 0 = 1,
- and a(3) = 1.
PROG
(PARI) See Links section.
CROSSREFS
Cf. A338774.
Sequence in context: A097027 A072741 A131360 * A213714 A242011 A353612
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Nov 08 2020
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)