1,4

Table of n, a(n) for n=1..74.

Rest[PrimeOmega/@RecurrenceTable[{a[0]==a[1]==1, a[2]==2, a[n]==n*a[n-3]}, a, {n, 80}]] Harvey P. Dale, May 17 2012

Sequence in context: A072729 A057872 A059974 * A108221 A169682 A082524

Adjacent sequences: A045764 A045765 A045766 * A045768 A045769 A045770

nonn,easy

Jeff Burch

approved