A085949 Smallest multiple of prime(n) of the form r*prime(n-1) + s*prime(n+1). r and s are positive integers.

9, 10, 21, 33, 39, 51, 57, 115, 116, 124, 185, 123, 129, 235, 106, 236, 244, 335, 213, 292, 395, 415, 623, 291, 303, 309, 321, 327, 1017, 1143, 655, 548, 834, 894, 604, 314, 815, 835, 346, 716, 1086, 1146, 579, 591, 1393, 422, 892, 681, 687, 1165, 956, 1446

Offset

2,1

Links

Table of n, a(n) for n=2..53.

Example

a(1) = 1*2 + 2*5 = 12 = 4*3 = 4* prime(2). r = 1 and s = 2 both r and s are positive integers.
a(9) = 1*23 + 3*31 =116 =4*29 = 4*prime(10).

Crossrefs

Cf. A085950.

Sequence in context: A300023 A022314 A178350 * A102238 A104646 A214425

Adjacent sequences: A085946 A085947 A085948 * A085950 A085951 A085952

Keyword

nonn

Author

Amarnath Murthy and Jason Earls, Jul 15 2003

Extensions

Corrected and extended by David Wasserman, Feb 15 2005

Status

approved