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A080180
a(1)=1, a(n+1)=a(n)+spf(Sum(a(i): 1<=i<=n)), where spf=A020639 (smallest prime factor).
2
1, 2, 5, 7, 10, 15, 17, 20, 27, 29, 36, 49, 51, 320, 339, 341, 344, 1957, 1959, 1962, 1965, 1967, 13390, 13393, 13395, 13406, 13409, 13411, 13414, 13433, 13435, 145544, 145547, 145549, 145552, 145559, 145561, 146040, 146057, 146059, 146090, 146093
OFFSET
1,2
COMMENTS
a(n+1)=a(n)+spf(A080181(n)) for n>0.
CROSSREFS
Cf. A080182.
Sequence in context: A018406 A018483 A018270 * A159942 A102339 A172410
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Feb 05 2003
STATUS
approved