A085066 a(1) = 6, a(n) = smallest number of the form k*a(n-1) +1 with the same prime signature p*q (6 = 2*3), where p and q are primes.

6, 55, 111, 334, 335, 671, 1343, 16117, 16118, 64473, 64474, 257897, 2063177, 8252709, 41263546, 123790639, 371371918, 1485487673, 2970975347, 59419506941, 356517041647, 5704272666353, 11408545332707, 262396542652262

Offset

1,1

Comments

Is this the same as A085067? - R. J. Mathar, Aug 28 2025

Links

Table of n, a(n) for n=1..24.

Crossrefs

A061092 gives the sequence with a(1) = 2 i.e. terms of the form k*a(n-1)+1 which are primes.( prime signature p^1)

Cf. A061092, A085065.

Sequence in context: A119079 A119220 A119218 * A085067 A069508 A079465

Adjacent sequences: A085063 A085064 A085065 * A085067 A085068 A085069

Keyword

nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 29 2003

Extensions

Corrected and extended by David Wasserman, Jan 11 2005

Status

approved