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A115025 a(n) = n-th element of n-th row of triangle shown below. 0
1, 2, 2, 7, 3, 21, 25, 113, 17, 289, 321, 1665, 769, 5633, 7169 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

1

1..............................................2

1......................3.......................2.......................4

1...........5..........3...........7...........2...........6...........4...........8

1.....9.....5....13....3....11.....7....15.....2....10.....6....14.....4....12.....8....16

1.17..9.25..5.21.13.29.3.19.11.27..7.23.15.31..2.18.10.26..6.22.14.30..4.20.12.28..8.24.16.32

...

CROSSREFS

Cf. A049773.

Sequence in context: A014840 A077218 A102780 * A075428 A116077 A074144

Adjacent sequences:  A115022 A115023 A115024 * A115026 A115027 A115028

KEYWORD

nonn

AUTHOR

Jonas Wallgren (jonwa(AT)ida.liu.se), Feb 24 2006

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Last modified February 14 08:58 EST 2012. Contains 205614 sequences.