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A078879 Triangle read by rows: T(n,k) = ceiling(k^2 / n), 0 < k <= n. 0
0, 1, 0, 1, 2, 0, 1, 1, 3, 0, 1, 1, 2, 4, 0, 1, 1, 2, 3, 5, 0, 1, 1, 2, 3, 4, 6, 0, 1, 1, 2, 2, 4, 5, 7, 0, 1, 1, 1, 2, 3, 4, 6, 8, 0, 1, 1, 1, 2, 3, 4, 5, 7, 9, 0, 1, 1, 1, 2, 3, 4, 5, 6, 8, 10, 0, 1, 1, 1, 2, 3, 3, 5, 6, 7, 9, 11, 0, 1, 1, 1, 2, 2, 3, 4, 5, 7, 8, 10, 12, 0, 1, 1, 1, 2, 2, 3, 4, 5, 6, 8, 9, 11 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,5
LINKS
EXAMPLE
0;
1, 0;
1, 2, 0;
1, 1, 3, 0;
1, 1, 2, 4, 0;
...
PROG
(PARI) {T(n, k) = if( n<1 || k>=n, 0, ceil(k^2 / n))}
CROSSREFS
Rows sums is A014811.
Sequence in context: A286471 A176079 A067586 * A082859 A083537 A231353
KEYWORD
easy,nonn,tabl
AUTHOR
Michael Somos, Dec 13 2002
STATUS
approved

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Last modified March 29 08:48 EDT 2024. Contains 371268 sequences. (Running on oeis4.)