umbral and tetration
#3
Huh  it seems a complete area of research 

although my ignorance is pretty big in combinatorics also

Sándor, J., & Crstici, B. (2004). Stirling, bell, bernoulli, euler and eulerian numbers. Handbook of Number Theory II, 459–618. doi:10.1007/1-4020-2547-5_5
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Messages In This Thread
umbral and tetration - by tetration101 - 03/01/2020, 10:47 PM
RE: umbral and tetration - by Daniel - 03/02/2020, 12:05 AM
RE: umbral and tetration - by tetration101 - 03/02/2020, 05:19 AM
RE: umbral and tetration - by Daniel - 03/02/2020, 06:28 AM



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