A162704 - OEIS

A162704

Numbers that are the sum of two reversed consecutive primes.

5, 8, 12, 18, 42, 48, 54, 86, 87, 92, 93, 102, 105, 108, 109, 111, 123, 124, 130, 134, 135, 136, 162, 177, 180, 246, 258, 282, 294, 303, 372, 402, 426, 434, 450, 456, 468, 470, 492, 504, 528, 542, 564, 576, 582, 588, 774, 812, 816, 828, 846, 852, 862, 866

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OFFSET

1,1

COMMENTS

Subsequence of A162706.

Numbers of the form A004087(j)+A004087(j+1), any j. - R. J. Mathar, Jul 11 2009

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

109 is in the list because it is the sum of R(47)+R(53)=74+35=109.

MATHEMATICA

Take[Union[Total[IntegerReverse[#]]&/@Partition[Prime[Range[500]], 2, 1]], 100] (* The program is not suitable for more than 100 or so terms. *) (* Harvey P. Dale, Apr 26 2022 *)

CROSSREFS

Cf. A004087, A162706.

Sequence in context: A025001 A020749 A120135 * A134650 A314412 A314413

Adjacent sequences: A162701 A162702 A162703 * A162705 A162706 A162707

KEYWORD

nonn,base

AUTHOR

Claudio Meller, Jul 11 2009

EXTENSIONS

4 removed, keyword:base added by R. J. Mathar, Jul 13 2009

STATUS

approved