G.f.: A(x) = exp( Sum_{n>=1} 5*5^A112765(n) * x^n/n ), where A112765 is the exponent of the highest power of 5 dividing n.
A195760
G.f.: A(x) = exp( Sum_{n>=1} 5*5^A112765(n) * x^n/n ), where A112765 is the exponent of the highest power of 5 dividing n.
Terms
- a(0) =1a(1) =5a(2) =15a(3) =35a(4) =70a(5) =130a(6) =230a(7) =390a(8) =635a(9) =995a(10) =1515a(11) =2255a(12) =3290a(13) =4710a(14) =6620a(15) =9160a(16) =12505a(17) =16865a(18) =22485a(19) =29645a(20) =38695a(21) =50055a(22) =64215a(23) =81735a(24) =103245a(25) =129505a(26) =161405a(27) =199965a(28) =246335a(29) =301795
External references
- oeis: A195760