A number that will change definitions between seasons.
Shiki no kazu (Japanese: 四季の数) (English: Four seasons numbers) is a dynamic googologism that grows over seasons. It has 4 definitions:
春の数 (Spring number) is equal to {3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5} in BEAF (Class 10: Polynomial omega level)
夏の数 (Summer number) is equal to E678#^^#678 in Extended Cascading-E notation (Class 15: Iterated Cantor normal form level)
秋の数 (Autumn number) is equal to 100![9, 10, 11] in hyperfactorial array notation (Class 10: Polynomial omega level)
冬の数 (Winter number) is equal to s(12, 12, 1, 2, 12, 1, 2) in strong array notation (Class 10: Polynomial omega level)