OFFSET
0,5
EXAMPLE
[0] 1
[1] 0, 1
[2] 0, 2, 2
[3] 0, 3, 2, 6
[4] 0, 4, 6, 6, 24
[5] 0, 5, 4, 12, 24, 120
[6] 0, 6, 12, 24, 48, 120, 720
[7] 0, 7, 6, 24, 72, 240, 720, 5040
[8] 0, 8, 16, 36, 144, 360, 1440, 5040, 40320
[9] 0, 9, 12, 54, 144, 600, 2160, 10080, 40320, 362880
MAPLE
MATHEMATICA
PROG
(SageMath) # uses[DivisorTriangle from A327029]
from sage.combinat.partition import number_of_partitions_length
def A318144Abs(n, k): return number_of_partitions_length(n, k)*factorial(k)
DivisorTriangle(euler_phi, A318144Abs, 10)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Aug 20 2019
STATUS
approved