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A136611 (0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3,..) becomes (0, 1, 2, 3, 4^5, 6, 7*8, 9, 10^11, 12^13, 14*15, 16, 17^18*19,..). 1
0, 1, 2, 3, 1024, 6, 56, 9, 100000000000, 106993205379072, 210, 16, 267198604589286774829171, 20, 462, 552, 2220446049250313080847263336181640625, 27 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

a(5)=4^5=1024.

a(7)=7*8=56.

a(9)=10^11=100000000000.

a(10)=12^13=19216339899072.

a(11)=14*15=210.

a(12)=17^18*19=266314164608823014829171,

etc.

CROSSREFS

Cf. A141269, A141270.

Sequence in context: A256115 A066685 A076155 * A004898 A062920 A228127

Adjacent sequences:  A136608 A136609 A136610 * A136612 A136613 A136614

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Nov 08 2008

EXTENSIONS

a(10) and a(13) corrected and 2 terms appended - R. J. Mathar, Apr 14 2010

STATUS

approved

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Last modified May 20 02:50 EDT 2019. Contains 323412 sequences. (Running on oeis4.)