A018220 Row 1 of A018219, i.e., (1, n, a_n) is a winning position.

2, 4, 0, 3, 1, 6, 5, 12, 15, 17, 14, 20, 7, 19, 10, 8, 28, 9, 31, 13, 11, 32, 38, 33, 41, 43, 40, 42, 16, 49, 51, 18, 21, 23, 53, 59, 61, 63, 22, 66, 26, 24, 27, 25, 67, 75, 68, 78, 76, 29, 79, 30, 85, 34, 88, 87, 93, 95, 97, 35, 100, 36, 98, 37, 99, 106, 39, 44, 46, 111, 114

Offset

0,1

Comments

Self-inverse when considered as a permutation or function, i.e., a(a(n)) = n.

Links

Table of n, a(n) for n=0..70.

Index entries for sequences that are permutations of the natural numbers

Crossrefs

Sequence in context: A325490 A123514 A064178 * A004580 A215451 A375746

Adjacent sequences: A018217 A018218 A018219 * A018221 A018222 A018223

Keyword

nonn

Author

Michael Kleber

Extensions

Edited and extended by Christian G. Bower, Oct 29 2002

Status

approved