OFFSET
1,4
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..213
PROG
(PARI)
{A001190(n) = local(A); if( n<4, n>0, A = vector(n, i, 1); for( i=4, n, A[i] = sum( j=1, (i-1)\2, A[j] * A[i-j]) + if( i%2, 0, A[i/2] * (A[i/2] + 1)/2)); A[n])}; /* Michael Somos, Mar 25 2006 */
A046523(n) = my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]) \\ Charles R Greathouse IV, Aug 17 2011
for(n=1, 213, write("b278250.txt", n, " ", A278250(n)));
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 22 2016
STATUS
approved