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A004158 Triangular numbers written backwards. 2
1, 3, 6, 1, 51, 12, 82, 63, 54, 55, 66, 87, 19, 501, 21, 631, 351, 171, 91, 12, 132, 352, 672, 3, 523, 153, 873, 604, 534, 564, 694, 825, 165, 595, 36, 666, 307, 147, 87, 28, 168, 309, 649, 99, 5301, 1801 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A176231 A176230 A094445 * A058178 A058078 A016551

Adjacent sequences:  A004155 A004156 A004157 * A004159 A004160 A004161

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 02:38 EST 2012. Contains 205689 sequences.