A218865 First of a run of 7 consecutive numbers with same prime signature.

440738966073, 464881210073, 645462662449, 914549532721, 932537185321, 936083045673, 1043710445721, 1091100709673, 1225660528209, 1349165568945, 1602377996921, 1682159750473, 1714275593649, 1730241245545, 1756186304521, 1872671302049, 1956516794721, 1987087485225

Offset

1,1

Comments

a(1) = A034173(7) = A218455(443) = A218455(444)-1.

a(19) > 2*10^12. - Donovan Johnson, May 11 2013

Links

Table of n, a(n) for n=1..18.

Example

The 7 consecutive numbers from 645462662449 to 645462662455 all have a prime signature of 2,1,1,1.

Crossrefs

Cf. A034173, A034174, A052213, A052214, A175590, A218448, A218455.

Sequence in context: A082411 A113952 A375647 * A289111 A364785 A209833

Adjacent sequences: A218862 A218863 A218864 * A218866 A218867 A218868

Keyword

nonn

Author

Donovan Johnson, Nov 08 2012

Extensions

a(7)-a(18) from Donovan Johnson, May 11 2013

Status

approved