OFFSET
1,1
COMMENTS
First differs from A336426 in having 360.
EXAMPLE
The sequence of terms together with their prime indices begins:
3: {2} 22: {1,5} 39: {2,6}
5: {3} 23: {9} 40: {1,1,1,3}
6: {1,2} 25: {3,3} 41: {13}
7: {4} 26: {1,6} 42: {1,2,4}
9: {2,2} 27: {2,2,2} 43: {14}
10: {1,3} 28: {1,1,4} 44: {1,1,5}
11: {5} 29: {10} 45: {2,2,3}
13: {6} 30: {1,2,3} 46: {1,9}
14: {1,4} 31: {11} 47: {15}
15: {2,3} 33: {2,5} 49: {4,4}
17: {7} 34: {1,7} 50: {1,3,3}
18: {1,2,2} 35: {3,4} 51: {2,7}
19: {8} 36: {1,1,2,2} 52: {1,1,6}
20: {1,1,3} 37: {12} 53: {16}
21: {2,4} 38: {1,8} 54: {1,2,2,2}
MATHEMATICA
supfac[n_]:=Product[k!, {k, n}];
facsusing[s_, n_]:=If[n<=1, {{}}, Join@@Table[Map[Prepend[#, d]&, Select[facsusing[Select[s, Divisible[n/d, #]&], n/d], Min@@#>=d&]], {d, Select[s, Divisible[n, #]&]}]];
Select[Range[100], facsusing[Rest[Array[supfac, 30]], #]=={}&]
CROSSREFS
A336496 is the complement.
A000178 lists superfactorials.
A001055 counts factorizations.
A006939 lists superprimorials or Chernoff numbers.
A303279 counts prime factors (with multiplicity) of superprimorials.
A317829 counts factorizations of superprimorials.
A322583 counts factorizations into factorials.
A325509 counts factorizations of factorials into factorials.
KEYWORD
nonn
AUTHOR
Gus Wiseman, Aug 03 2020
STATUS
approved