A080181 a(1)=A080180(1), a(n)=a(n-1)+A080180(n) for n>1.

1, 3, 8, 15, 25, 40, 57, 77, 104, 133, 169, 218, 269, 589, 928, 1269, 1613, 3570, 5529, 7491, 9456, 11423, 24813, 38206, 51601, 65007, 78416, 91827, 105241, 118674, 132109, 277653, 423200, 568749, 714301, 859860, 1005421, 1151461, 1297518

Offset

1,2

Comments

a(n)=a(n-1)+spf(a(n-1)) for n>1.

Links

Table of n, a(n) for n=1..39.

Crossrefs

Cf. A080183.

Sequence in context: A022451 A212772 A238806 * A071399 A001208 A159465

Adjacent sequences: A080178 A080179 A080180 * A080182 A080183 A080184

Keyword

nonn

Author

Reinhard Zumkeller, Feb 05 2003

Status

approved