A327489 - OEIS

A327489

T(n, k) = 1 + NOR(k - 1, n - k), where NOR is the Peirce arrow operating bitwise on the inputs, triangle read by rows, T(n, k) for n >= 1, 1 <= k <= n.

1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 4, 1, 2, 1, 4, 3, 3, 1, 1, 3, 3, 2, 3, 2, 1, 2, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 8, 1, 2, 1, 4, 1, 2, 1, 8, 7, 7, 1, 1, 3, 3, 1, 1, 7, 7, 6, 7, 6, 1, 2, 3, 2, 1, 6, 7, 6, 5, 5, 5, 5, 1, 1, 1, 1, 5, 5, 5, 5

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OFFSET

1,4

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

1, 1

2, 1, 2

1, 1, 1, 1

4, 1, 2, 1, 4

3, 3, 1, 1, 3, 3

2, 3, 2, 1, 2, 3, 2

1, 1, 1, 1, 1, 1, 1, 1

8, 1, 2, 1, 4, 1, 2, 1, 8

7, 7, 1, 1, 3, 3, 1, 1, 7, 7

6, 7, 6, 1, 2, 3, 2, 1, 6, 7, 6

5, 5, 5, 5, 1, 1, 1, 1, 5, 5, 5, 5

4, 5, 6, 5, 4, 1, 2, 1, 4, 5, 6, 5, 4

3, 3, 5, 5, 3, 3, 1, 1, 3, 3, 5, 5, 3, 3

2, 3, 2, 5, 2, 3, 2, 1, 2, 3, 2, 5, 2, 3, 2

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

MAPLE

A327489 := (n, k) -> 1 + Bits:-Nor(k-1, n-k):

seq(seq(A327489(n, k), k=1..n), n=1..12);

CROSSREFS

Cf. A327488 (Nand), A327490 (Iff), A280172 (Xor).

T(2n+1,n+1) gives A080079.

Sequence in context: A231148 A266649 A159847 * A257886 A144477 A106345

Adjacent sequences: A327486 A327487 A327488 * A327490 A327491 A327492

KEYWORD

nonn,tabl

AUTHOR

Peter Luschny, Sep 22 2019

STATUS

approved