A214220 - OEIS

A214220

Smallest squarefree deficient number with n prime factors that is part of primitive friendly pair.

273, 1995, 356235, 6768465, 215561445, 8381978605, 889577580507, 9176928067615, 977229739621135, 159778696591499755, 12961232730855705065, 5133226984135500020155, 527303555325724107882055, 36714792413117114527127897, 96369422480705367222515908615

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OFFSET

3,1

LINKS

Michel Marcus, Table of n, a(n) for n = 3..22

Michel Marcus, Prime factors of the friendly pairs for n=3..22

EXAMPLE

For n=3, 273 (3*7*13) and 2876211 (3^2*13^2*31*61) have no common prime factor with same exponent.

CROSSREFS

Cf. A096366.

Sequence in context: A200836 A276980 A350303 * A029567 A028534 A279114

Adjacent sequences: A214217 A214218 A214219 * A214221 A214222 A214223

KEYWORD

nonn

AUTHOR

Michel Marcus, Jul 07 2012

STATUS

approved