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A261190 Leap years in Symmetry454 calendar, starting year AD 1. 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 (list; graph; refs; listen; history; text; internal format)
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 A307202 A162488

Adjacent sequences:  A261187 A261188 A261189 * A261191 A261192 A261193

KEYWORD

nonn

AUTHOR

Felix Fröhlich, Aug 11 2015

STATUS

approved

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Last modified April 22 06:35 EDT 2019. Contains 322329 sequences. (Running on oeis4.)