A322695 - OEIS

A322695

Nine-column table read by rows: Primitive distinct 9-tuples that have the same value of phi, sigma, and tau.

4337267040, 4548689376, 4577446560, 4578614964, 4606647660, 4607561340, 5024337318, 5056654590, 5059532610, 4343835816, 4344550776, 4467333640, 4467573880, 4583778744, 4584409224, 4879970766, 4880641986, 5149389234, 4775185440, 5003255712, 5007954336, 5036171868, 5039648160, 5040901404, 5072803740

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OFFSET

1,1

COMMENTS

The terms are consecutive 9-tuples, ordered so that (A) a(9i-8) < a(9i-7) < ... < a(9i) for i > 0, and (B) a(9i+1) < a(9i+10) for i >= 0. This sequence has primitive solutions only. If k is relatively prime to all the terms in a primitive 9-tuple, then multiplying the terms in that 9-tuple by k gives another solution - see A322685.

LINKS

Jud McCranie, Table of n, a(n) for n = 1..1242

EXAMPLE

4337267040, 4548689376, 4577446560, 4578614964, 4606647660, 4607561340, 5024337318, 5056654590, and 5059532610 have the same value of phi (1106472960), sigma (15850598400), and tau (384), so these nine numbers are in the sequence.

CROSSREFS

Cf. A134922, A322685, A322688, A322689, A322690, A322691, A322692, A322693, A322694, A322696, A322697.

Sequence in context: A288282 A210014 A322685 * A114670 A092776 A271446

Adjacent sequences: A322692 A322693 A322694 * A322696 A322697 A322698

KEYWORD

nonn,tabf

AUTHOR

Jud McCranie, Dec 30 2018

STATUS

approved