A262551 Triangle read by rows: coefficients in Bell's formula for number of ways of making change with a certain set of coins.
1, 1, 1, 1, 9, 10, 1, 10, 19, 10, 1, 405, 2735, 4825, 2500, 1, 406, 3140, 7560, 7325, 2500, 1, 3953, 54077, 213505, 360580, 277200, 80000
Offset: 1
Examples
Triangle begins: 1, 1,1, 1,9,10, 1,10,19,10, 1,405,2735,4825,2500, 1,406,3140,7560,7325,2500, 1,3953,54077,213505,360580,277200,80000, ...
Links
- G. Blom and C.-E. Froeberg, Om myntvaexling (On money-changing) [Swedish], Nordisk Matematisk Tidskrift, 10 (1962), 55-69, 103. [Annotated scanned copy]