A057745 Erroneous version of A083276.

1, 20, 400, 5362, 72078, 822518, 9417683

Offset

0,2

Comments

This is considered erroneous because it counts as distinct two positions at ply 6 where in one case, an en passant capture is available but illegal, while in the other case, the en passant capture is not available. It is questionable whether two such positions should be considered equivalent, since the definition of position (as opposed to diagram) includes the information on whether en passant is available (i.e., pseudolegal), not whether it is legal. [Depending on the variant of chess that is played, it may be allowed to make otherwise "illegal" moves which expose one's king to a capture.] - M. F. Hasler, Mar 02 2022

Links

Table of n, a(n) for n=0..6.

Crossrefs

Sequence in context: A188988 A019319 A083276 * A224386 A189198 A224019

Adjacent sequences: A057742 A057743 A057744 * A057746 A057747 A057748

Keyword

dead

Status

approved