A143536 Triangle read by rows, T(n,k) = 1 if n is prime, 0 otherwise.

0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

Offset

1,1

Comments

Row sums = A061397: (0, 2, 3, 0, 5, 0, 7,...).

Links

Reinhard Zumkeller, Rows n = 1..125 of table, flattened

Formula

Triangle read by rows, T(n,k) = 1 if n is prime, 0 otherwise. Mobius transform (A054525) of triangle A143535.

Example

First few rows of the triangle =
0;
1, 1;
1, 1, 1;
0, 0, 0, 0;
1, 1, 1, 1, 1;
0, 0, 0, 0, 0, 0;
1, 1, 1, 1, 1, 1, 1;
...

Prog

(Haskell)
a143536 n k = a143536_tabl !! (n-1) !! (k-1)
a143536_row n = a143536_tabl !! (n-1)
a143536_tabl = zipWith take [1..] $ map repeat a010051_list
-- Reinhard Zumkeller, Mar 21 2014

Crossrefs

Cf. A143535, A061397.

Cf. A010051.

Sequence in context: A276398 A204549 A112713 * A204437 A080110 A286419

Adjacent sequences: A143533 A143534 A143535 * A143537 A143538 A143539

Keyword

nonn,tabl

Author

Gary W. Adamson, Aug 23 2008

Status

approved