A114111 Where records occur in A111390.

1, 2, 3, 5, 7, 11, 13, 19, 29, 31, 33, 35, 37, 39, 41, 67, 69, 71, 73, 75, 77, 9687, 9689, 9691, 9693, 9695, 9697, 9699, 9701, 9703, 9705, 9707, 9709, 9711, 9713, 9715, 9717, 9719, 9721, 9723, 9725, 9727, 9729, 9731, 9733, 9735, 9737, 9739, 9741, 9743, 9745

Offset

1,2

Links

Table of n, a(n) for n=1..51.

Formula

Conjectures from Chai Wah Wu, Jul 27 2022: (Start)

a(n) = 2*a(n-1) - a(n-2) for n > 23.

G.f.: x*(-9608*x^22 + 9608*x^21 - 24*x^16 + 24*x^15 - 8*x^9 + 4*x^8 + 4*x^7 - 2*x^6 + 2*x^5 + x^3 + 1)/(x - 1)^2. (End)

Crossrefs

Cf. A111390, A114110.

Sequence in context: A020588 A227202 A237827 * A155108 A356856 A222565

Adjacent sequences: A114108 A114109 A114110 * A114112 A114113 A114114

Keyword

nonn

Author

Klaus Brockhaus, Nov 13 2005, Jan 01 2006

Status

approved