A261190 Leap years in Symmetry454 calendar, starting year AD 1.

3, 9, 15, 20, 26, 31, 37, 43, 48, 54, 60, 65, 71, 77, 82, 88, 93, 99, 105, 110, 116, 122, 127, 133, 139, 144, 150, 155, 161, 167, 172, 178, 184, 189, 195, 201, 206, 212, 217, 223, 229, 234, 240, 246, 251, 257, 263, 268, 274, 279, 285, 291, 296, 302, 308, 313

Offset

1,1

Comments

Year n is a leap year if and only if ((52 * n + 146) % 293) < 52.

Links

Felix Fröhlich, Table of n, a(n) for n = 1..10000

I. Bromberg, 52/293 Symmetry454 (start Monday) Leap Years (Table of initial 780 terms)

I. Bromberg, The Symmetry454 Calendar - Leap Rule

Wikipedia, Symmetry454

Prog

(PARI) is(n) = ((52*n+146)%293) < 52

Crossrefs

Cf. A057347, A057349, A189917.

Sequence in context: A093414 A123998 A117105 * A282031 A375060 A307202

Adjacent sequences: A261187 A261188 A261189 * A261191 A261192 A261193

Keyword

nonn

Author

Felix Fröhlich, Aug 11 2015

Status

approved