A327488 T(n, k) = 1 + NAND(k - 1, n - k), where NAND is the Sheffer stroke operating bitwise on the inputs, triangle read by rows, T(n, k) for n >= 1, 1 <= k <= n.

1, 2, 2, 4, 1, 4, 4, 4, 4, 4, 8, 3, 2, 3, 8, 8, 8, 2, 2, 8, 8, 8, 7, 8, 1, 8, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 16, 7, 6, 7, 4, 7, 6, 7, 16, 16, 16, 6, 6, 4, 4, 6, 6, 16, 16, 16, 15, 16, 5, 4, 3, 4, 5, 16, 15, 16, 16, 16, 16, 16, 4, 4, 4, 4, 16, 16, 16, 16

Offset

1,2

Links

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

Example

                               1
                              2, 2
                            4, 1, 4
                           4, 4, 4, 4
                         8, 3, 2, 3, 8
                        8, 8, 2, 2, 8, 8
                      8, 7, 8, 1, 8, 7, 8
                     8, 8, 8, 8, 8, 8, 8, 8
                  16, 7, 6, 7, 4, 7, 6, 7, 16
                16, 16, 6, 6, 4, 4, 6, 6, 16, 16
             16, 15, 16, 5, 4, 3, 4, 5, 16, 15, 16
           16, 16, 16, 16, 4, 4, 4, 4, 16, 16, 16, 16
        16, 15, 14, 15, 16, 3, 2, 3, 16, 15, 14, 15, 16
      16, 16, 14, 14, 16, 16, 2, 2, 16, 16, 14, 14, 16, 16
   16, 15, 16, 13, 16, 15, 16, 1, 16, 15, 16, 13, 16, 15, 16
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16

Maple

A327488 := (n, k) -> 1 + Bits:-Nand(k-1, n-k):
seq(seq(A327488(n, k), k=1..n), n=1..12);

Crossrefs

Cf. A327489 (Nor), A327490 (Iff), A280172 (Xor).

Sequence in context: A359855 A214714 A023137 * A065273 A352707 A140819

Adjacent sequences: A327485 A327486 A327487 * A327489 A327490 A327491

Keyword

nonn,tabl

Author

Peter Luschny, Sep 22 2019

Status

approved