A039753 - OEIS

A039753

Numbers common to A006145 and A039752.

5, 77, 714, 5405, 26642, 52554, 95709, 154842, 173162, 204258, 208581, 248109, 278277, 332994, 417162, 445305, 529194, 554682, 693610, 851709, 869054, 1232746, 1252509, 1275546, 1275730, 1549454, 1600962, 1607045, 1671333, 1672710, 1777026

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OFFSET

1,1

COMMENTS

Mostly the subset of either A006145 or A039752 where both a(n) and a(n)+1 are squarefree (members of A005117), but also members of A178214. - Hans Havermann, Dec 16 2010, Dec 19 2010

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

77 (7*11, with 78 = 2*3*13) is a member of both A006145 and A039752 (7+11 = 2+3+13) and so 77 is a member of this sequence.

7129199 (7*11^2*19*443, with 7129200 = 2^4*3*5^2*13*457) is a member of both A006145 (7+11+19+443 = 2+3+5+13+457) and A039752 (7+11+11+19+443 = 2+2+2+2+3+5+5+13+457) and so 7129199 is also a member of this sequence.

CROSSREFS

Cf. A006145, A039752, A005117, A178214.

Sequence in context: A214867 A330999 A331000 * A277533 A186662 A186660

Adjacent sequences: A039750 A039751 A039752 * A039754 A039755 A039756

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved