A051544 Quotients of consecutive values of lcm {1, 4, 7, 10, 13 ...,(3n+1)} (A016777).

4, 7, 5, 13, 4, 19, 11, 5, 1, 31, 17, 37, 1, 43, 23, 7, 1, 1, 29, 61, 4, 67, 1, 73, 1, 79, 41, 1, 1, 1, 47, 97, 1, 103, 53, 109, 1, 1, 59, 11, 1, 127, 1, 1, 1, 139, 71, 1, 1, 151, 1, 157, 1, 163, 83, 13, 1, 1, 89, 181, 1, 1, 1, 193, 1, 199, 101, 1, 1, 211, 107, 1, 1, 223, 113, 229

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

a(n) = A051536(n)/A051536(n-1)

Example

a(3) = A051536(3)/A051536(2) = 140/28 = 5

Mathematica

nn=80; With[{c=Range[1, 3*nn, 3]}, Last[#]/First[#]&/@Partition[Table[LCM@@ Take[c, n], {n, nn}], 2, 1]] (* Harvey P. Dale, Feb 23 2012 *)

Crossrefs

A051536.

Sequence in context: A346836 A046549 A331138 * A271304 A271124 A336080

Adjacent sequences: A051541 A051542 A051543 * A051545 A051546 A051547

Keyword

easy,nonn

Author

Asher Auel

Extensions

More terms from James A. Sellers

Status

approved