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A045986 Describe the n-th triangular number A000217(n). 2
10, 11, 13, 16, 1110, 1115, 1211, 1218, 1316, 1415, 25, 26, 1718, 1911, 111015, 111210, 111316, 111513, 111711, 111910, 121110, 121311, 121513, 121716, 1320, 131215, 131511, 131718, 141016, 141315, 141615, 141916, 151218, 151611, 151915 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..34.

CROSSREFS

Cf. A000217, A005150, A045987, A045988.

Sequence in context: A121295 A121296 A121265 * A216836 A188165 A125588

Adjacent sequences:  A045983 A045984 A045985 * A045987 A045988 A045989

KEYWORD

nonn,easy,base

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Patrick De Geest, Jun 15 1999

STATUS

approved

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Last modified December 6 20:22 EST 2021. Contains 349567 sequences. (Running on oeis4.)