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A133109 Triangle read by rows, A042965 on the diagonal, 0 elsewhere. 1
1, 0, 3, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
FORMULA
A042965: (1, 3, 4, 5, 7, 8, 9, 11, 12, 13, ...) as the diagonal of an infinite lower triangular matrix and the rest zeros.
EXAMPLE
First few rows of the triangle:
1;
0, 3;
0, 0, 4;
0, 0, 0, 5;
0, 0, 0, 0, 7;
...
PROG
(PARI) row(n) = vector(n, k, if (k==n, (4*n+1)\3)); \\ Michel Marcus, Mar 07 2022
CROSSREFS
Cf. A042965, A133110 (binomial transform).
Sequence in context: A279368 A021773 A244126 * A130208 A363155 A364084
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Sep 12 2007
EXTENSIONS
More terms from Michel Marcus, Mar 07 2022
STATUS
approved

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Last modified March 29 03:41 EDT 2024. Contains 371264 sequences. (Running on oeis4.)