1,2
Table of n, a(n) for n=1..14.
Table[Sum[Factorial[i]^(n - i + 1), {i, n}], {n, 20}]
Similar to A003101 = Sum_{k = 1..n} (n-k+1)^k - only with inserted factorials.
Sequence in context: A074504 A126115 A018193 * A009025 A009103 A018192
Adjacent sequences: A121942 A121943 A121944 * A121946 A121947 A121948
nonn
Tanya Khovanova, Sep 03 2006
approved