A055554 An arithmetic progression each term of which is followed by at least 4 nonsquarefree consecutive integers.

242, 1757711582, 3515422922, 5273134262, 7030845602, 8788556942, 10546268282, 12303979622, 14061690962, 15819402302, 17577113642, 19334824982, 21092536322, 22850247662, 24607959002, 26365670342

Offset

1,1

Comments

From the terms of A051681 or A045882 similar progressions for longer chains can be constructed.

Links

Table of n, a(n) for n=1..16.

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (2, -1).

Formula

a(n) = d*n + 242, where d = LCM(242, 243, 244, 245) = 1757711340 = 2*2*3*3*3*3*3*5*7*11*11*61.

Crossrefs

Cf. A005117, A013929, A053806, A053797, A045882, A051681.

Sequence in context: A335611 A194788 A338454 * A214105 A018871 A343483

Adjacent sequences: A055551 A055552 A055553 * A055555 A055556 A055557

Keyword

nonn

Author

Labos Elemer, Jul 10 2000

Status

approved