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A051486 Triangle T(n,k) = number of symmetric Boolean functions of n variables and rank from 0 to 2^n. 1
1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 1, 2, 4, 2, 1, 2, 1, 1, 2, 1, 0, 2, 4, 3, 2, 2, 2, 3, 4, 2, 0, 1, 2, 1, 1, 2, 1, 0, 0, 2, 4, 2, 0, 0, 3, 6, 3, 0, 0, 4, 8, 4, 0, 0, 3, 6, 3, 0, 0, 2, 4, 2, 0, 0, 1, 2, 1, 1, 2, 1, 0, 0, 0, 2, 4, 2, 0, 0, 0, 1, 2, 1, 2, 4, 2, 0, 0, 1, 6, 9, 4, 0, 0, 2, 6, 6, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..98.

Index entries for sequences related to Boolean functions

EXAMPLE

[1, 1], [1, 2, 1], [1, 2, 2, 2, 1], [1, 2, 1, 2, 4, 2, 1, 2, 1], ...

CROSSREFS

Row sums give A011782.

Sequence in context: A109073 A255337 A026465 * A218541 A213911 A081355

Adjacent sequences:  A051483 A051484 A051485 * A051487 A051488 A051489

KEYWORD

nonn,tabf,nice

AUTHOR

Vladeta Jovovic

STATUS

approved

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Last modified January 22 13:41 EST 2020. Contains 331149 sequences. (Running on oeis4.)