A223548 Smallest prime factors for sequence A223546.

13, 229, 269, 331, 1036991, 193, 1187, 379, 942381313, 1078717, 1690920279179, 593, 181, 1433, 641, 139, 631, 2622013, 1123, 130337, 223, 155784593, 3746107, 1223, 13791824242727551, 67623587, 853, 299635177, 3966293, 197, 4755811387725362803, 263, 40637, 577

Offset

1,1

Links

Sidney Cadot, Table of n, a(n) for n = 1..34

Formula

a(n) = A020639(A223546(n)).

Example

a(3) = 229, the smallest prime factor of A223546(3) = 233335657 = 229*307*3319.

Crossrefs

Cf. A020639, A223546.

Sequence in context: A160196 A218588 A158518 * A201706 A176722 A083081

Adjacent sequences: A223545 A223546 A223547 * A223549 A223550 A223551

Keyword

nonn

Author

Paul Larm, Mar 21 2013

Extensions

a(15)-a(34) from Chai Wah Wu, Oct 10 2019

Status

approved